Sram pg-850 8 speed cassette Give your bike special treatment by upgrading to the SRAM PG-850 cassette. Powerglide technology will provide reliable shifts, and the steel, chrome plated construction ensures durability and longevity. Features Powerglide II Technology Durable heat treated steel cogs Accurate shifts Specifications COMPATIBILITY: Shimano freehub; 7/8-speed chain MATERIAL: Steel Chrome-plated WEIGHT 231g (11-28t)PG-850 Cassette SIZE CHARTSize11-28t11-30t11-32t12-23t12-26t Tooth count per cog11, 12, 14, 16, 18, 21, 24, 2811, 13, 15, 17, 20, 23, 26, 3011, 13, 15, 17, 20, 23, 26, 3212, 13, 14, 15, 17, 19, 21, 2312, 13, 15, 17, 19, 21, 23, 26 | Sram | Pg-850 8 Speed Cassette 11-32T