Burgtec Thick-Thin Direct Mount Chain Ring - Shimano Direct Mount - 3mm Boost - Round - Kash Bronze - 12 Speed Shimano - 30T eBay Materials: 50% cotton / 50%

Materials: 50% cotton / 50% poly jersey fabric

They also have larger pulleys and taller teeth for better chain security and higher ride height

infused Medical-grade white mineral oil for improved comfort and durability

They also come with a protective goggle bag

Burgtec Thick-Thin Direct Mount Chain Ring - Shimano Direct Mount - 3mm Boost - Round - Kash Bronze - 12 Speed Shimano - 30T eBay Materials: 50% cotton / 50%Keep 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.