Replaceable thumb rest and rubber cushion designed for clarinet and oboe players who want a more comfortable, stable thumb position and protection for their instrument. Key benefits Ergonomic cushioning: soft, flexible rubber provides a comfortable surface for the thumb and helps prevent rubbing on the instrument and thumb rest. Durable construction: stainless steel base with tearresistant rubber for long lasting use. Precise fit: shaped to match standard metal thumb rests and suitable for thumb post diameters from 14.5 to 17.5 millimeters. Simple installation: includes two screws and a rubber cushion for quick replacement or upgrade. Features Materials: stainless steel plus flexible rubber. Thumb rest dimensions: approximately 27 x 16 x 20 mm. Rubber protector dimensions: approximately 20 x 15 mm. Package weight: about 14 grams. Color: as shown in the pictures. Package contents: 1 thumb rest, 1 rubber cushion, 2 screws. Practical use scenarios Practice sessions: add cushioning to your instrument for longer practice without having to adjust hand position frequently. Performance setup: retrofit a worn metal thumb rest to protect the instrument finish and provide a consistent resting point for the thumb. Student instruments: easy to install replacement that improves comfort for learners using standard clarinet and oboe thumb posts. Notes Fits thumb posts or thumbrest bars with a diameter between 14.5 and 17.5 millimeters. Allow 1 to 3 mm variation due to manual measurement. Actual color may vary slightly from photos depending on monitor settings.