SRAM Cassette Lockring for 11 Tooth First Cog, Aluminum

For SRAM cassettes that use an 11 or 12 tooth cog in the 1st position . 10sp X-Glide: aluminum construction for a 11 tooth first position cog *(also for use on XG-999 9sp cassette and replacement for discontinued PG 7-9sp / OG-1090 alloy lockrings) . 10sp Open/Power-Glide: aluminum construction (1070 level), or black steel (1050 level) . 9sp PowerGlide-II style: 11t red aluminum (970 DH level), silver aluminum (970 level), or black steel (950 level) CASSETTE LOCKRING SRAM Model ID: CS-SPP-A0Item SpecificationsDescriptionXG1190 Lockring, 11tColorSilver