Feature

●A convenient chain fastener that keeps the chain from playing inadvertently when you remove the rear wheel for car washing, maintenance, and other bicycle rides
●Compatible with 0.4 inch (9 mm) quick release and 0.5 inch (12 mm) thru axles
●Since it is fixed to one side of the frame end, it can be used regardless of the end width
●Resin roller moves with the chain, perfect for chain cleaning and derailleur maintenance
●Manufactured by a reliable Taiwan leading bicycle tool manufacturer

Description