The Fast and Easy Chain Cleaning SystemThe power of Clean Streak plus the scrubbing action of a chain cleaner! Snap onto the chain, backpedal and pull the trigger!Clean Streak sprays onto the chain while brushes and scrubbers strip away grease and grunge from the chainThe Trigger Chain Cleaner kit includes a 12 oz Clean Streak CFC-free aerosol degreaserThe Trigger is fast and EASY TO USE: just open the package, and you're ready to goPlace The Trigger over the chain, and close the lid of the chain cleaner with your trigger (index) fingerSpray Clean Streak through the chain cleaner and onto the chain while backpedalling for 3 chain revolutionsStop spraying, but continue to turn the crank for several more rotationsYou'll have a clean chain in under 20 seconds!