Review: knock off Gravity Hook

One of my friends lent me this piece to compare. I have covered the Fishbones Gravity Hook a number of times, and have been involved with beta testing, so my appreciation and bias is pretty well known.

It appears that the Kickstarted design that Eldrick Garcia and his team developed, over many iterations, and put into production has been copied and is now for sale and being plugged online. Now, I am all for free market, and it's inevitable that great ideas will be copied, I wanted to try at least to compare and contrast the two designs.

Here are the two hooks side by side, with the Fishbones version on the left, and the Molibao version on the right. You can see they are essentially identical, remarkably so. The "arms" of the hooks are essentially carbon-copy of each other. The arcs, bolt-holes, the middle-notch hole and even the curves of the hooks are identical.

The mounting hardware is different, but bolts and self-locking nuts are ubiquitous, as are the shackle loop at the bottom. No big issues with that, obviously.




The batarang cross-hook pieces indicate pretty well the differences between the two pieces however.


The Fishbone cross-hook is obviously thicker, which is true for the entire construction which is made out of 1/8" thick 304 stainless steel and all of the Gravity Hooks and weighs 360g all told.

You can also see the finish of the Fishbone hook is much neater, with the Molibao finish having a notch still present inside the cross-hook. Thicker steel means stronger steel in my books, assuming it was the same grade, which I have no way of knowing.



The differences between the thicknesses of the steel used between the two Gravity Hooks have been taken into account in the Molibao version, which was good to see.

The notch-holes were differently spaced, and adjusted to still ensure a good fit, so the hook actually works identically to the original.

Essentially, if you didn't know that it wasn't from the original manufactures and had one to had to compare with, you wouldn't know it wasn't an original.


One thing I wanted to cover, then, was the price point. I went back and checked the Fishbone website and the steel Gravity Hook is $39.99, the titanium version is $79.99

On the Nifty Thrifty Store site, where I -think- you can get the real deal (maybe, given the use of the official promo-shots) they are $65.37.

The Molibao versions are on AliExpress and other cheep-gear sites, but really, you get what you pay for. I know you're not supposed to be putting your life on the line (literally) with the Gravity Hooks, but, why not spend a little more, for a better quality, original product, and give back to the people who are doing the innovation in the first place.

Review: Fishbones - Gravity Hook (production)

Production on the left, prototype on the right

I covered the original release of the prototype Gravity Hook back in March, when the prototype was sent my way by the guys from FishBones. Not long ago the final production version of the Gravity Hook arrived, with some improvements.

The Gravity Hook is a combination grappling hook, and gravity claw. (Here's their promotional video...) By removing the middle cross-bar the more than serviceable grappling hook can be quickly converted into a claw-machine like grabbing claw. The clever design allows you to swap between these two features in just moments.

Production on the right, prototype on the left

The whole assembly weighs around 360g in its stainless steel configuration, a complete assembly includes 3 links, 3 "hammers", a cross hook, and hardware, in bolts and self-locking nuts.

One of the production improvements is the notches cut into the throat of the hammer, these allow the cross hook to seat much more securely that in the prototype, where it was held in place solely via the notch cut into top of the cross hooks. 

Production on the right, prototype on the left

The stainless Gravity Hook is made out of 1/8" thick 304 stainless steel and all of the Gravity Hooks hardware hardware is also stainless. When the hook is fully open, the 1.5" mouth will hold over 165lbs when biting into a 2x4.

When fitted, the cross hooks set in the jaws of the hammers, the Gravity Hook up as a quite effective grapple. The jaws are held in place and stopped from opening the by the twin o-rings which seat in a set of notches cut into the link pieces, and hold the jaws surprisingly tightly.

Production on the bottom, prototype on the top

 Given their design, any the pull on the tines of the hook only act to pull it further closed, the effect of the o-rings is really quite sufficient.

FishBones have suggested that an after market modification, drilling a hole in the middle of the hammer arms to fit a locking pin, for extra security, but so far, I haven't felt the need myself.

The bolts and locking nuts supplied with the production model are a much slimmer profile than the nuts and bolts I picked up at the hardware store, that was a big help.

The production version has nicely rounded notches cut into the links, where as the prototype version is rather a bit more rough making it rougher on and harder to remove the o-rings.

Production on the right, prototype on the left

One of the other backers of the Gravity hooks asked if they wanted to use it as a boat anchor for an inflatable lake boat, how they would dislodge it should it hook onto something on the bottom. Another backer suggested it could be set up with a failable style link like this  where if you pull hard enough the top link breaks and lets you pull the anchor from the bottom. A second way would be to use 2 ropes; one attached to the shackle, and the other looped through the claw to act as an emergency release in case the hook snags.


Here's me testing the grappling hook


Here's me testing the claw feature on a variety of dropped gear.

Two kinds of cross hook: plain and gear-tie batarang!

 You might ask "what makes it high performance?" well, this is probably a matter of its features:

• It can be used either as a 2 or 4 pronged grappling hook.
• In the claw mode it "bites" objects that might slip out of a grapnel.
• Compact enough to be stowed on a back pack strap, by clamping the jaws over the strap and feeding the tail end through a loop
• Can be dismantled into its base components for more compact storage. 
• It's available in stainless steel, titanium or even non metalic Derlin.

There are also two options for the cross hooks, with the classic solid hook, as well as a version with cut-aways, both lightening the cross hook, and also offering a place to use it as a gear tie, not unlike the FishBones and Piranha gear ties these guys came to the front with. 

Ss, you have a very cool tool in the Gravity Hook, but what are its limits? Well, the Gravity Hook was specifically designed for retrieving. It has not been tested or certified to bear human weight. The makers strongly state that you should never use it in a situation where it's failure or dislodging might cause bodily harm or property damage. In a pinch though, it can certainly take a fairly hefty load: 

using the Gravity Hook as a bogged truck rescue tool

How do you get the Gravity Hook to release something whilst under tension?



Here's their testing underwater!


As well as being a really useful dropped-gear and treasure retrieving claw, and a sturdy and rugged grapple, the Gravity hook is also a really well made piece of engineering. I really appreciate its design and functionality. I've got a small CountyComm grapple, which is billed as a trip-wire clearer, but for bigger jobs, when you want to snag, yank and retrieve gear, or haul something you would do well with one of the FishBones Gravity hooks.

Better yet, the guys at FishBones have just launched a NEW project, the Gravity Hook XS, a pocket sized version, in just two-pronged format, on KickStarter. You should totally go check it out, and add some grabby, grapply goodness to your loadout.

Review: Fishbones - Gravity Hook

I've been lucky enough to snag a couple of prototypes for a Kickstarter project that has just a few days to go, and I really wanted to get the message out to you all, so you can take advantage of the situation, and back this awesome project. This comes from the same folks that brought us the Fishbones and Piranha gear ties.

This is a tool, called the Gravity Hook, which  can be used just as a 2 pronged hook, as a grappling hook with the addition of a cross-hook or, in its primary format, as a grabbing hook.

It is designed to "bite" objects that might slip out of a grapnel, much like The Claw, from a claw game.

A complete assembly is made up of includes 3 linking bars, 3 "hammer" arms, a cross hook, and nut-and-bolt hardware. A bow-shackle at the end gives you a cord-attachment option.

The whole assembly weighs around 360g in its stainless steel configuration, and a mere 60g in the high-performance Derlin plastic.

Notches cut into the linking bars as channels allow you to affix o-rings, which really help when tightening hardware. They are used to help keep the jaws tightened around the cross-hook whilst set up in the grappling hook configuration, and also during modification by keeping the parts lined up, to let you thread the bolts more easily. I've covered a small grappling hook before but this blows that right out of the water.


Bear in mind that the two version I have are prototypes, and by following along with the Kickstarter campaign there have been several improvements thus far. Notches in the jaws where the cross-hook sit should eliminate the slight wobble that the base of the cross-hook gets when in the grappling hook configuration. This was more noticeable in the Derlin prototype, but from the 3D renders I've seen this will be completely eliminated in the production model. The Derlin model also has a double set of o-ring channels, one high, one low.

I tried the low set as a place to store the o-ring I was using, but found that the added tension reduced the bite that the hook had, and combined with the low weight of the Derlin version, I found more success with the o-ring slipped off the hook entirely. The other difference in the two models are a couple of extra sets of holes in the Derlin version, presumably for threading extra bolts through to "lock" the grappling hook in place.

Two designs of cross-hook are seen as well, the solid version in stainless steel retains the weight and all the strength possible, but the cut-away version more closely matches the hammer-arms of the main body, as well as acting as a gear-tie, following n the footsteps of the Fishbone and Piranha.

Compact enough to be stowed on a back pack strap, I also found that the pair of Gravity hooks, along with their cross-hooks, and a length of paracord fit nicely in a Platatac FUP pouch. I carried both around in my cargo-pants for a few days, trying them out on various things to grab and hook, and  found that I needed to be careful which side the shackle bolt was sitting but the rest was easy to carry comfortably.

Here's a safety note: the Gravity Hook was specifically designed for retrieving kit and grabbing things. It has not been tested or certified to bare human weight. The guys who designed them have done some car-towing and some anecdotal destructive testing but stress to never use it in a situation where it's failure or dislodging might cause bodily harm or property damage. As with any climbing or salvage work, always use good judgment. You are responsible for your own actions and decisions. In an emergency, you might need to take extraordinary measures, but the risks are also extraordinary. Failure to follow these warnings could result in property damage, severe injury or death. Be prepared for anything, don;t become a casualty.

So, all that in mind, I really like the Gravity Hook. It's going to be a part of my EDC from now on (because I like to roll as heavy as I can get away with). Having this kind of gadget is exactly the kind of thing that I get to be a hero for carrying, at some stage, always. The Derlain version means I even have an airport safe version to take with me on any abrupt mountain-side landing trips I might be on.

Get in quick, back them on Kickstarter and remember: Always prepare to be a better version of yourself. Unless you can be Batman, then be Batman.

Sneak Peek: Fishbones - Gravity Hook

The guys who brought us the Fishbones and Piranha gear ties now have these awesome Gravity hooks in progress on Kickstarter. Part Mechanical Claw, part Grappling Hook and sent me sent me these two prototypes, one in steel, the other Derlin ... all awesome. Check out all the details on Kickstarter for now, review to follow here too!

Tactical Baby: "Those are Batman's..."

Omega: "No darling, they're Daddy's.."

Tactical Baby: nods grimly...

Go back them ... be Batman!