Burgtec Thick-Thin Direct Mount Chain Ring - Shimano Direct Mount - 3mm Boost - Round - Purple Rain - 12 Speed Shimano - 30T Ignore Wholesale Tier 2 Brand Rule The new Iris cage is

The new Iris cage is a contemporary styled cage using the same robust 304 Stainless Steel

made from sturdy yet light 7050 alloys

and rounded

1 pair of Shimano D01S brake pads

Burgtec Thick-Thin Direct Mount Chain Ring - Shimano Direct Mount - 3mm Boost - Round - Purple Rain - 12 Speed Shimano - 30T Ignore Wholesale Tier 2 Brand Rule The new Iris cage isKeep that chain in place where it should be with a Burgtec Thick Thin Chain Ring. Designed with a proven thick thin tooth profile for improved chain retention. Who's this item for: Riders who use 1x drivetrains and are looking for superior chain retention as well as durability. Weight: 0. 08g Pros: Wide range of tooth options. Works for 9, 10, 11, and 12 speed setups. Great build quality. Cons: Oval options not available in all mounting types.