Protects rear derailleur by maintaining chain tension when the rear wheel is removed Ideal bike service tool for washing, tune-ups and traveling Accommodates road bikes, cyclocross bikes, mountain bikes, electric bikes, fitness bikes and more Fits 12 mm Thru-Axle dropouts Prevents the chain from slapping against delicate and painted frame surfaces High-density, solvent resistant, bio-based PA56 roller is easy on your chain, yet incredibly durable CNC machined aluminum body is corrosion-resistant and comfortable in-hand Tool-free, easy-install design makes use simple and effective for beginner or professional bike mechanic Sustainability Ability Group (SAG) approved - bio-based material, low packaging volume, and mono-material for easy recycling. Thru-Axle Chain Keeper
