Sell [Kai] Professional Guitar Hand Finger Exerciser Medium Tension Hand Grip Power Trainer best price

Product Name: CF-1 beginner piano and guitar finger trainer Color: red, green, black, yellow Material: ABS + silica gel Scope of application: all people who need to practice finger force Selling point: Finger force instruments are universal, streamlined design, more comfortable, in line with the shape of the hand, not easy to practice fatigue, soft silicone, fit design, each button flexible, not loose, durable, plastic packaging, not easy to damage, strength 5 pounds Packing: 1Pc