Finger Trainer 2-Piece Set 3-Level Adjustable ⭐Anonymous Delivery & Free Shipping⭐ Please check the actual photos for the product condition♪ #Click here for a list of koooosshop products✨ Adjustable resistance levels. Based on the grip strength of the finger trainer, the power finger has 6 selectable levels: Black 13LB, 17LB, 21LB. Suitable for both men and women, and can be used by the elderly and children. Grip strength enhancement function. The power finger not only improves the strength of fingers, wrists, and forearms, but also improves blood circulation in the hands and reduces pain. Furthermore, it helps to reduce fatigue and balance muscle tightening and expansion. The tension values of the different levels of finger stretchers also differ, allowing you to train as needed. Finger Trainer 2-Piece Set Finger Power [H・K] Power Finger Training Grip Assist 6 Adjustable Resistances Grip Strength Finger Stretcher Good Elasticity Nursing Strengthening Training Rehabilitation Equipment Function Recovery Stress Relief Children Adults Elderly Unisex 10-21 007 ★★★★