Features: 1. Made of high ABS material, durable. 2. Practise the dexterity and strength of the finger. Suitable for Guitar, Bass, Piano, Violin. 3. Hand exerciser grip, a must tool to all music players. 4. Safely and conveniently build strength, endurance, flexbility and coordination. 5. Comfortable finger pads and allows you to adjust individual finger tension from light to heavy, providing all-in-one hand fitness for musicians. Specification: Material: ABS Size: 9x8cm Applicable scene: Fitness equipment, fitness Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.