LCBarley Callus Ball for Hand 2026 Hand Grip Strengthener Moon Grip Ball Callus Rock Rock Climbing Grip Trainer, Anti-Sweat Grip StrengthenAer 2Pcs Black(S)

Callus Ball for Hand Feature:

1. Build Real Calluses Fast – Uses porous stone edges + pressure for safe, effective abrasion

2. Increase Grip Strength & Endurance – Squeeze and roll to train grip muscles daily

3. Combat Sweaty Hands – Thicker skin reduces sweat and improves confidence

4. Promote Hand Recovery & Blood Flow – Long duration squeezing stimulates growth

5. Portable & Discreet – Train your grip anywhere: office, truck, gym, or couch

6. Easy to Clean – Simply wash with soap and water to keep it fresh

Material:

Volcanic Rock

Size: S (1.18in) \ M (1.57in) \ L (1.96in)

Color: Black

Package Includes:

1Pcs * Callus Ball

Note:

1. Pore size varies ball to ball.

2. Due to manual measurement, please allow an error of 1-2cm.