Features: Brand new and high quality Thumb finger rest is made of rubber material, with high flexibility, providing a comfortable wearing experience. It is tear-resistant and durable. It provides comfort and is easy to use. Suitable for 14.5–17.5mm diameter thumbs, offering universal fit. The rubber protector helps reduce thumb discomfort, provides extra thumb support, and protects your instruments and hands. Excellent accessory to rest your thumb and enhance playing performance. Its special shape design fits your metal thumb rest perfectly. 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. Ensure you are comfortable with this before purchasing. Due to differences in monitor displays, the picture may not reflect the actual color of the item. Thank you. Package Includes: 1 x Thumb Rest 1 x Rubber Cushion 2 x Screw