Just squeeze and roll it over your palms, fingertips, and fingers. The natural, ridged texture provides safe, controlled abrasion that stimulates callus formation, improves grip endurance, and helps manage palm sweating — all without damaging your skin.
Feature:
✔ Build Real Calluses Fast
✔ Improve Grip Strength & Reduce Hand Sweat
✔ Increase Grip Strength & Endurance
✔ Train your grip anywhere
✔ Easy to Clean
How to Use:
Roll the Ball with moderate pressure across your fingers, fingertips, and palms for a few minutes a day. Use throughout the day to build tough calluses and unstoppable grip without tearing your skin.
Specifications:
Name: Callus Ball for Hand
Material: Volcanic Rock
Size: 2 inches (5 cm)
Note:
Dimensions can vary slightly, but diameter is just about 2 inches (5 cm)
Pore size and color can vary since it's made out of our unique, natural stone
Expect some light shedding from the stone for the first few uses