The PG-1070 cassette’s semi-spidered design maintains a high level of shifting performance with a matched cassette/chain combination that runs near silent. To help you in the toughest climbs, it is now available in the new 11-32 ratio. Features: Cassette design for high shifting performance with a quieter chain/cassette combination. Semi-spidered design: light, strong, efficient. 11-36 option is only compatible with SRAM Road 1x medium and long cage derailleurs. This 11-36 option also offers 13% lower gearing with its 36t cog against the 32t cog on the 11-32 option Specifications:Technology Highlight(s): Semi-spidered steel cogs, WiFLi™, PowerGlide™Weight: 247g (11-26) , 257g (11-28) , 300g (11-32), 366g (11-36)Material: Heat treated steel cog cluster, Aluminum spider (3 cogs)Gear Ratios: 11-25: 11,12,13,14,15,16,17,19,21,23,25, 11-26: 11,12,13,14,15,16,17,19,21,23,26 , 11-28: 11,12,13,14,15,16,17,19,22,25,28, 11-32: 11,12,13,14,15,17,19,22,25,28,32, 11-36: 11,12,13,15,17,19,22,25,28,32,36Speeds: 11Colors: Blast silver, Zephyr silver anodized finish with laser-etched logos (11-36)Recommended Chain: SRAM PC 1170 chainSprockets on Spider: 3Lock Ring Material: AluminumSprocket Material: Steel/ aluminumRecommended Group: SRAM Force® 1, SRAM Force® 22, SRAM RED® 22Compatibility: SRAM Force® 1, SRAM Force® 22, SRAM RED® 22, 11-36 Only use with medium and long cage SRAM road rear deraillerus with X-Horizon™