Does not harm seals

cast aluminium construction

Cups and Covers -7075 T-6 Aluminum

WEIGHT - 126 g / 4

Casing choices: Options include EXO+ for enhanced sidewall protection

Burgtec Thick-Thin Direct Mount Chain Ring - Shimano Direct Mount - 3mm Boost - Round - Kash Bronze - 12 Speed Shimano - 30T NoAusPost Does not harm sealsKeep 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.