The best grime killer in the business! The High-Performance Ultrasonic Chain Cleaner is a professional-strength cleaner that gives chains a deeper clean than ever before. It quickly breaks down the stickiest oils, grease and grime, giving your chain a complete refresh. It’s the first step in improving chain efficiency, by leaving a spotless, friction-free surface for your new Muc-Off lube to work its magic on – so your drivetrain works more efficiently, for longer! 1L workshop sized bottle.