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.Curved handle design, more ergonomic; give you the comfort of imagination; the product is edging and will not be handy.Effectively solve the problem of soft fingers, weakness, hand collapse, and insufficient finger span. You can practice four fingers or two fingers.Small size and easy to carry; our products are made of high quality and environmentally friendly materials, have strong toughness, are not bad and can not be broken.Our products are not only suitable for the music field, but also can be used as a practice tool in many sports, such as rock climbing, tug-of-war, archery, tennis, arithmetic and so on.Specification:Name: Musical instrument universal spreaderSize: with size chart for your referenceApplicable: Finger exercises for all kinds of instrumentsUses: Help music lovers to solve the problem that the fingers cant open, exercise the span to increase the flexibility of the fingers, and carry them around for practice.Colour:GreenMaterial:plasticSize:21mmPackage Contents:1 * finger tension exerciserOnly the above package content, other products are not included.Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.