Item specifics・Color: BlackMaterial: PlasticStrength Range: 2.5~6 poundsTelescopic range: 80-100mmDescription:This finger trainer can help beginners to improve fingering response capabilities、 including the flexibility of the fingers、 pressing efforts、 reduce the error and press the string sound more accurately. Beginners pressing strength is not enough、 especially caused pain while pressing fingers. You can use it to slowly exercise finger strength training to increase the reaction rate、 etc. Training every day、 finger strength will improve slowly、 and playing musical instruments become more skilled. We guarantee that the components of this item are all in good condition. Thanks for your supporting and purchasing.Feature:Improve strength、 flexibility、 control and coordination ability of finger muscle.Compact and portable、 improve the ability of the finger anywhere、 anytime.Adjustable tension、 exercise span and strength of finger.Ergonomic design、 fits palm、 press smoothly、 comfortable to hold. Packing List1 x Finger Exerciser Trainer