TrimmerPlus AS720 34-Inch Extended Reach Aluminum Fixed Line Head for Attachment Capable String Trimmers, Polesaws, and Powerheads Boom, Black Lightweight: designed with a lightweight feel with heavy-duty aluminum. Perfect for replacing Worn Out lower booms. 34" Extended reach: straight shaft added reach makes it easier to trim under bushes, around fencing, and in hard-to-reach places. Fixed Line head: makes loading Line quick and easy by using pre-cut, easy to insert cutting line. 0.105-Inch Line: durable and can easily be loaded in seconds. Warranty: 2-year Warranty Fits Attachment capable units from Troy-Bilt, Remington, Craftsman, Yard Machines, Yardman, Snapper, Bolens, Murray, Ryobi, Greenworks, Kobalt and most other major brands. Inner coupler tube diameter: 1.65-Inches. Drive shaft connector: Square shape, 1/5, female