The SunRace 10V 11/40 cassette is the ideal choice for anyone who has a 1x10 player or wants to upgrade. With this cassette, you get exactly the resistance you need. The cassette is made of high-quality steel and finished in metallic silver. It's durable and reliable, making it suitable for intensive use. The cassette has 10 gears with a wide ratio, so you can enjoy smooth, precise circuits. With the tooth combination of 11-13-15-18-21-24-28-32-36-40, you can easily handle different sites. Product specifications: - Model: CSMS3 tax - Gears: 10 (wide ratio) - Function: Drive Fluid Plus - Virtue: 11-40T -Danaire: 11-13-18-21-24-28-32-36-40 - Material: - spider, spacer and knoskrans: aluminum / black anodized - Dental crowns: hi-nile steel - Finish: metallic silver color - Weight: 414 grams