Burgtec Thick-Thin Direct Mount Chain Ring - SRAM Direct Mount - 3mm Boost - Round - Kash Bronze - 9-12 Speed - 30T Back in Stock Features: Highly absorbent wiping surface

Features: Highly absorbent wiping surface

Pros: It's 100% biodegradable

Cons: The cost- but it is Park Tool

Pump head type: The pump has a hose with a reversible screw-on chuck

The carbon crank combines stiffness and strength with a lightest-in-class weight of under 800 grams

Burgtec Thick-Thin Direct Mount Chain Ring - SRAM Direct Mount - 3mm Boost - Round - Kash Bronze - 9-12 Speed - 30T Back in Stock Features: Highly absorbent wiping surfaceKeep 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.