Callus Ball for Hand – Hand Grip Strengthener, Moon Grip Ball, Callus Training Ball, Skin Conditioning Callus Building Grip Training Fidget, Rock Climbing Grip Trainer (Black-4cm-2pcs)

• 【Maximize Hand Friction】Callus Ball for Hand Perfect for athletes, climbers, weightlifters, martial artists, or anyone wanting better hand control, stability, and tactile feedback.
• 【Boost Grip Strength】Callus Ball for Hand The textured surface creates a secure, non-abrasive squeeze that won’t irritate skin, boosting toughness and enhancing friction for superior hold.
• 【Grip Training + Stress Relief】Callus Ball for Hand Its ergonomic shape delivers a satisfying squeeze, easing hand fatigue while building and toning grip muscles.
• 【Strengthen & Condition Skin】Callus Ball for Hand This callus-building grip ball is specially designed to condition hands and boost grip endurance.
• 【Multi-Shape Design for Custom Intensity】Callus Ball for Hand Pick from a 4cm standard ball, cube, or mini moon shape—each with subtle texture variations for a one-of-a-kind training experience.

Specifications: Item Name: Callus Ball for Hand Size: 4cm, 5cm Color: Black, Red Package Include: 1/2pcs * Callus Ball for Hand