product description: Size: 9*7.5*2.2cm Color: green and white Material: PP+TPR The package includes: 2 * Clamps describe: The ergonomically designed finger trainer guitar is perfect for athletes and musicians. Provides comprehensive strength training solutions to develop and maintain strength and flexibility in fingers, hands, wrists and forearms. Promotes finger strength,flexibility, coordination and speed. High Quality Finger Trainer with Solid Construction The finger trainer is composed of high quality springs, new ABS plastic, soft silicone handle and button caps, comfortable to hold, easy to fix, doesn't hurt your fingers, durable and has better performancethan other finger trainers in occupational therapy longer service life. Adjustable Tension Finger Climbing Trainer for Individual Fingers The climbing hand trainer offers custom adjustment for individual fingers and resistance that can be adjusted from 5 to 7 pounds per finger to meet all your training needs and All-in-onefor hand health. Extremely portable design finger trainer piano, easy to carry. You can put it in your luggage, bag, purse, purse, etc. The slim size allows you to hold everything in the palm of your hand and exercise your fingers on the go.