1. Material: silicone
2. Weight: 65-70 grams
3. Size: about 7.5cm in diameter
4. Applicable people: 20LB (suitable for elderly or rehabilitation use), 40LB (suitable for ladies or men with less strength), 60LB (suitable for men), 80LB (suitable for men), 100LB (suitable for men with greater strength)
5. Uses: finger exercises, rehabilitation training
Specification:
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