General description The Laser Tools LTR Chain Keeper Tool is designed to replace the rear wheel of your bike, securely fixing into the frame using the thru axle. This tool keeps the chain tensioned and away from the frame, making it ideal for chain cleaning and maintenance. Technical specifications Adjustable to fit dropout spacings: 135mm, 142mm, 148mm (Boost), 150mm Collar external diameter: 23mm Compatibility and accessories Fits frames that use a thru axle 9mm real axle QR version available (Laser Part No. 8199) Usage Ideal for chain cleaning Useful for maintenance tasks Convenient for transportation of the bike