1. Material: aluminum alloy + leather 2. Weight: 170g 3. Size: diameter 1.5cm, length 5.5cm, width 5.5cm, height 7.5cm 4. Made of leather and metal materials, durable. 5. Suitable for most models on the market, easy to install and more stable, only suitable for use with a round gear lever. 6. Packing list: Stall x 1 Screws x 4 Rubber ring x 3 Wrench x 1