they're about the same price as the Luftkappe
Wheels Manufacturing Bearing Drift Set Essential Kit Bearing Tool UPC: 811079027054
Durable powder coated steel construction
Item Specifications Defined Color Red Direct Mount Type Direct Mount CINCH Drivetrain Speeds 10 Drivetrain Speeds 11 Drivetrain Speeds 12 Drivetrain Speeds 9 Material Aluminum Offset 3 Round or Oval Round Tooth Count 28
Without the shim it will fit tubes 1-5/8" (41mm)
Wolf Tooth Elliptical Direct Mount Chainring - 34t, SRAM Direct Mount, Drop-Stop B, For SRAM 8-Bolt Cranksets, 3mm absoluteblack they're about the same priceThese Wolf Tooth Elliptical direct mount rings are designed for SRAM cranks with 8 bolt mounting. This chainring is equipped with the patent pending Drop Stop asymmetrical tooth design for the best in wear life, mud clearance, and chain retention. Elliptical chainring shape provides better efficiency in the recovery zone, as well as increased traction thanks to consistent torque Drop Stop chainrings are designed for use with 1x9, 1x10, 1x11 and 1x12