Features 1、Professional piano gesture tool is used to prevent wrong gestures while playing the piano. 2、Develop good playing habits and use right gesture to play or practice 3、This product is designed for beginners or people who want to have a good habit 4、The boom is mainly made of ABS engineering materials. The silicone suction cup on the boom can provide proper adsorption for close cooperation without damaging the piano surface. 5、The switch design is convenient for adsorption, which is very humanize Specification Item Type: Piano Gesture Corrector Material: Engineering plastic + aluminum alloy + ABS Optional Style: Universal Style-Black, Universal Style-Silver, Universal Style-Gold Length: Approx. 140 ~ 150cm / 55.1 ~ 59.1in Package List 2 x Support Arm 2 x Connection Sleeve 2 x Connector 3 x Metal Rod 1 x User Manual (English)