The Makita 144765-5 Complete Clutch Drum EA5000 helps transfer engine power to the cutting chain in compatible Makita chainsaw equipment. Working with the clutch assembly, the clutch drum supports proper chain drive operation and helps maintain consistent cutting performance. It is a practical replacement for a worn, damaged, or faulty drum that may cause chain movement issues or redu... https://www.wholetoolbox.com/makita-144765-5-complete-clutch-drum-ea5000/144765-5.html