SRAM XG-1195 X01 10-42 11-Speed Cassette Black 11sp MTB X-domeSRAM XG 1195 Cassettes X Dome machined steel design minimizes weight while minimizing flex Largest cog is aluminum Requires use of XD driver (freehub body) New finish provides greater durability Use with SRAM XX1 11 speed chain SRAM 10 and 11 speed cassettes with 11 tooth cogs have the smallest cog located behind the cassette in the packaging Item Specifications Intended Use Mountain Cassette Spacing Shimano SRAM 11 Cassette Body Type Shimano SRAM 11