KETTLE GRYP - The Original - As Seen on SHARK TANK! Converts Your Dumbbells Into Kettlebells - Made in the USA - Dumbbell Grip Handle

nice adaptable product. easy to switch between dumbbells

Exactly what I wanted!

eXCELLENT

TLDR: great product, does what it intends, really handy; however, it might fall short of locking the dumbbell’s rotation if its handle is on the thin side.To the manufacturer: this product would get a solid 5-star if it was better at preventing the (on axis) rotation of dumbbells with thinner handles, for instance by including removable rubber pads (in order to adjust the inside diameter).As already pointed out by other reviewers, this product is really great overall.However, it comes short of fully locking my dumbbells in place, since they are fairly thin (1” handle, if I recall correctly). They won’t escape of course, but can rotate on their axis. This might not seem like a big deal, but it actually is. This means in particular that the energy of some parts of the movements (eg the brutal deceleration at the bottom of a swing) can be substantially transferred to the weights (through their rotation) instead of one’s body; this in turn significantly changes the resistance profile of an exercise. For instance, I use it for explosive swings, and after fixing the rotation issue (see below), I almost got knocked off my feet — which never happened previously. The exercise was now way more challenging.Bonus tip: if you encounter this problem, I’d recommend wrapping your dumbbell handle with rubber or similar material before locking it. I’ve used an (already damaged) resistance band (a big one) with great success, carefully wrapping it around the handle. This might damage the rubber, though.Bonus tip 2: if you use adjustable dumbbells, you also have to make sure that the weights can’t rotate wrt the dumbbell axis. This includes making sure they don’t unlock halfway through a set, but unfortunately one side will probably keep unlocking (that’s just physics). I’ve solved this problem on mine by adding a second pair of locks, and this keeps the first ones from moving. Hope this helps.

Works as advertised. I am very happy with the product. My only criticism would be that the grip be a little shorter

This great way to convert ypur weights into kettle bells. Not a perfect kettle bell, but it is good option

I have dumbbells from 10lb to 40lbs. I didn't want to have to buy kettlebells, and this lets me turn any dumbbell into a kettlebell. I wondered if it might be easier to bang up a knee with this than a K-bell, but it's not. I've had no issue with that at all.Nifty piece of gear and it does what I need it to do. It's also sturdy and holds the D-bell very tight.

Feels like a solid item aside from the fact it is entirely plastic but the pin itself it rotates on. However don't let the description or images fool you this does not fit bow flex dumbbells product "552" even without large plate removed. Also want going to try and force it as that shouldn't be necessary considering again its plastic.