Burgtec Thick-Thin Direct Mount Chain Ring - SRAM Direct Mount - 3mm Boost - Round - Toxic Barbie Pink - 9-12 Speed - 30T PDP|Option The 3/8" driver means it

The 3/8" driver means it will work with a large range of sockets

These cassettes are for those with an XD Driver

Low sprocket combination

and the Storage Sleeves all included

Specially contoured multi-layer face foam provides the perfect seal around your face and nose

Burgtec Thick-Thin Direct Mount Chain Ring - SRAM Direct Mount - 3mm Boost - Round - Toxic Barbie Pink - 9-12 Speed - 30T PDP|Option The 3/8" driver means itKeep 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.