【Multiple Size Options for Different Intensity Levels】- Choose from the standard 3/4/5CM Ball. Pore patterns vary slightly for a unique experience.
【Callus Ball for Hand】- a compact, grip-strengthening tool shaped from real natural stone to toughen skin and strengthen hands in your downtime.
【Rock-Solid Hands】- 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.
【Enhance Friction】- Originally designed as a training device for rock climbers, the Callus Balls has since been adopted by gym rats, grip strength athletes, arm wrestlers, blue collar workers, guitarists, and anyone looking to eliminate soft or sweaty hands.
【Grip Training & Stress Relief】The ergonomic size provides a satisfying squeeze, helping relieve hand fatigue while strengthening grip muscles.
Description
Callus Ball (callus building) Grip Training Fidget - Build Callused Hands That Can Handle Anything
Size:
Mini: 3 cm diameter(1.2in)
Basic: 4 cm diameter(1.6in)
Large Size: 5 cm diameter(2in)
Package Includes:
1/2Pcs * Callus Ball + Storage bag