Product Description: Advantages: 1.Every product has a unique Manufacturing Part Number label on the inner package that proves it has been qualified,which include Part Number,Model Number and inspection date information 2.If you have any questions about the item,please provide us the Manufacturing Part Number for checking,your profits will be guaranteed.3.Easy to install, durable and portable.4.Alleviate the fatigue of long-term playing a musical instrument.5.Provides extra thumb rest and protects your instrument and hands.6.1 set with plastic hook metal washer and screw. Attentions:Before buying, please check if the size of the hole is suitable. Specifications:Material:MetalColor:GoldSize:4.8x1.8x2.7cm/1.8x0.7x1inch(LxW)Weight:37g Package include:1 x hook1 x washer1 x screw Note: 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. Sold by-Minnanxin