TUNYIN Piano Finger Exerciser Set 1 Pair Finger Exerciser for Right Hand and Left Hand Finger Strengthener Trainer Piano Hand Grip Correction Tool for Both Hands

Features:
Includes 1 pair of finger trainers, suitable for both hands training at the same time.
Designed to improve your speed and accuracy when playing pianos, strengthen and correct finger posture, great exerciser for piano beginners
The finger pads are made of soft rubber, which can give a comfortable feel to the hands.
The base is made of durable ABS material with anti-skid pad on the bottom, so it won't wobble when you put it on the table to exercise your fingers.
Also a great tool for arthritis therapy and relieving stress.