Correct the hand shape of the piano-playing, adjustable design suitable for most pianos.

Features:
It can help to correct, develop fine habits, and help improve piano-playing technique.
Adjustable design suitable for most pianos.
It is a nice helper for piano learners, efficient and reliable.
It uses fine quality materials to help new students change their erroneous postures and develop fine habits.

Specifications:
Main color: yellow+black
Main material: metal+plastics
Package size: 300 * 160 * 30mm / 11.8 * 6.3 * 1.2in
Package weight: 280g / 9.9ounce

Packing List:
1 * Pair of Gesture Corrector