2Pcs Yootones Large and Medium Guitar Finger Expansion Plastic Finger Sleeve Finger Force Span Practing Trainer Tool for Ukulele Piano Saxophone Beginner (Blue)

This diffuser can help you quickly open your fingers and increase the span; stretch the ligaments, strengthen the power, make your fingers more flexible; adhere to training can improve basic skills. Our products are made of high quality and environmentally friendly materials, have strong toughness. Curved handle is design ergonomically, more comfortable to use. Suitable for instrument players, also can be used by athletes in different fields, such as rock climbing, tug-of-war, archery, tennis, arithmetic, etc. Please check the size before you buy it if your fingers are thick.