and high quality Features: Thumb finger rest is made of rubber material, with high flexibility and a comfortable wearing feel. It is tear-resistant and durable, providing comfort and ease of use. Suitable for thumb diameters of 14.5–17.5mm, offering universal fit. The rubber protector helps reduce thumb discomfort, provides extra thumb support, and protects your instruments and hands. Its special shape design fits securely on your metal thumb rest, enhancing playing performance. Specifications: Material: Stainless Steel + Rubber Color: As shown in the picture Package Weight: approx. 14g Thumb Rest Size: approx. 27 x 16 x 20mm / 1.1 x 0.6 x 0.8in (L x W x H) Protector Size: approx. 20 x 15mm / 0.8 x 0.5in (Dia x Thick) Note: Please allow 1–3mm error due to manual measurement. Due to differences in monitor displays, the picture may not reflect the actual color of the item. Package Includes: 1 x Thumb Rest 1 x Rubber Cushion 2 x Screw