【Product Specifications】Set Contents: 2 finger stretchers; Strength Adjustment: Black → 13LB/17LB/21LB; Gray → 6.6LB/8.8LB/11LB; Body Size: Length 12cm x Width 11cm, Hole Diameter 1.8cm/Height 2.8cm; Material: Silicone 【Finger Training】Using a hand grip strengthener, you can easily increase the strength of your fingers, forearms, and wrists. Alternatively, you can also work individually on the flexibility of each finger. 【Portable and Lightweight Design】The finger trainer is small and lightweight, fitting in a gym bag or pocket, allowing you to enjoy workouts at work or during leisure time. Thank you for viewing ⭐️ Instant purchase is OK ♪♪♪ If you have any questions, please ask before purchasing ☺️ Also, please take a look at the profile for more information ✨ There are many other products available ♡ We'll give you a discount for multiple purchases ♡ #saya'sProducts ☜☜ 30-27 650