Hand Grip Strengthener Exerciser Kit Hand Strength Grip & Finger Stretcher Strength Trainer For Arthritis Carpal Tunnel Exercise

Product information:
Material: durable material

Function: practice finger strength, speed and flexibility
Finger to finger coordination
Expansion: 8 to 10 mm from 8 to 10 mm down 8 to 10 mm

Packing list： Finger drill