A Nemesis Grips original!
This is an extremely humbling tool for training your thumbs. Place your thumb on the roller side, and fingers on the plate side. Because the fingers have nothing to latch onto, the thumb becomes the primary need for holding the lift.
The interchangeable roller spins with minimal friction and will have the tendency to spin out of your hand the moment your thumb starts to weaken even the slightest! Make sure to squeeze real hard!
The different size rollers provide diversity of thumb angles, but also accommodate different hand sizes.
Rollers are 5" in length and can be used with other Nemesis Grips handles. Axle is 1.5" from back of the plate, making the final working width wider than the diameter of the roller (ex. when attached, the far edge of 2" roller will be around 2.5" from the plate).
By default, the finish on the rollers are kept to raw steel to support consistency in competitions and also to allow for natural seasoning. However, as always, we're more than happy to accommodate any particular finishes to support your artistic and training desires.