SunRace 10-speed cassettes are a great option for riders who want to get the most out of their 10-speed drivetrains. The CS-MS2 is the perfect upgrade for riders who want an affordable cassette without upgrading to an entirely new drivetrain. The CS-MS2 offers a wider range than any stock SRAM or Shimano 10-speed cassette. The CS-MS2 is available in two different ranges: 11-42T and 11-40T. This cassette uses durable steel cogs which helps keep the cost low. The cassette will also fit on any splined freehub body and a few simple derailleur adjustments will have you enjoying the benefits of a wide range cassette. Features Compatible with all splined freehub bodies. Will not work with SRAM XD drivers. Hi-Tensile steel cogs for the best durability. Specifications Colour: Black Weight: 458g (11-40), 494g (11-42)