A neat lightweight direct mount retainer ring option for our chainset.New tooth profile option compatible with Shimano 12SPD drivetrain systems, a narrower tooth profile designed specifically for use with Shimano 12SPD chains. This differs to our Standard chainring and is now offered alongside Standard Retainer Rings.Key FeaturesNarrow/wide tooth profile designed to retain the chain without the need of a chain device.Direct mount retainer ring designed specifically for our cranksetAvailable in Standard or Boost offset.Saves weight without need for a separate spider.Ability to run a broader range of smaller chainring sizes.Compatible with 9spd, 10sp, 11spd and 12spd set-ups.Available in sizes ranging from 26 to 36 tooth (Shimano 12SPD in 32T & 34T only).Shimano 12SPD in Black onlySpiderless Chainring Tech Specifications*New* Shimano 12 Speed option for Shimano 12 Speed chains now offered alongside the Standard Retainer RingCNC machined 7075-T6 aluminium provides the perfect blend of lightweight and strength.Offset to give perfect chainline.Quieter drivetrain and reduced drag.Boost or standard option to get the best possible chainline.Weight: 26T-49g|28T-56g|30T-61g|32T-64g|34T-72g|36T-80g.Not suitable for use with Shimano 12 speed quick links