Hope Retainer Chainring - 36t, 104 BCD, R22, BlackThe Hope 104BCD Retainer Chainring has a narrow wide tooth configuration designed for 1x10, 1x11, 1x12 drivetrains, including SRAM T Type and Shimano HG+ set ups, without the need for a chain guide. Weight: 57 g Designed to be compatible with 9, 10, 11 and 12 Speed drivetrains, including SRAM T Type and Shimano HG+ Improved mud shedding capability and chain retention Better performance with extreme chain angles on modern 1x drivetrains Leg design