Hand Grip Gripper Trainer Hub Strengthener Tester

thingiverse

Grip strength trainer and tester hub. Test and strengthen your hand grip strength by holding only the upper curved sides of the hub. If the filament that you use is very smooth, you can use chalk to get a better grip on the hub. But don't cheat by gripping the flat sides, or the hub guard/fence. Add your dumbbell or kettlebell to the hook. If your dumbbell slides around on the hook, you can try cutting some pieces of foam pipe insulation and placing them on the ends of your dumbbell handle to keep the dumbbell centered on the hook. Use at your own risk. Safety tips: Use appropriate weight for your ability Use appropriate weight for the filament and design Don't lift over a surface or things that you don't want to damage Don't lift weights that you don't want to damage