Hope Spiderless Direct Mount Retainer chainrings are specifically designed for use with Hope cranksets and have a narrow/wide tooth configuration designed for 1x10, 1x11 and 1x12 speed setups without the need of a chain guide. - 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 provides improved strength and stiffness - CNC machined 7075-T6 aluminium provides the perfect blend of lightweight and strength - Offset to give perfect chainline Specifications: - Material: Aluminum - Round or Oval: Round - Color: Black - Direct Mount Type: Direct Mount Hope - Tooth Count: 30 - Drivetrain Speeds: 9 , 10 , 11 , 12