Amkor Trading Inc. Tri-Clone Trimmer Head The Tri-Clone Trimmer Head is a versatile trimmer head that can trim grass, bushes, and trees up to 3 inches in diameter. Features Weighs 1.2 pounds and is intended to sit on the ground for easy trimming A set of high-strength blades are installed on the trimmer head Has long-lasting blades Compatible With The trimmer must run counter-clockwise for the Tri-Clone Trimmer Head to operate correctly Straight Shaft Gas Trimmers Craftsman, Cub Cadet, Echo*, Honda, Hitachi, Homelite, Husqvarna, John Deere, Jonsered, Makita, Maruyama**, MTD, Redmax, Shindaiwa*, Stihl, TMC, Troy-Bilt, Ryobi*** Straight Shaft Lithium Battery Powered Trimmers DeWalt 20V and 60V EGO MST1603 Greenworks 82V Max ECHO V58 Toro Brushless Revolution Husqvarna 536 LiLX Sunseeker Bay Boy 80V Makita 18V LXT Brushless Makita 36V Brushless Makita EM405MP / EM400MP Milwaukee M18 Fuel Ryobi 40V Lithium-Ion Stihl FSA 130R Requirements: * Requires steel plate adapter (Echo part # C535000100) and blade nut #90051100010 (SRM) ** Requires blade adapter kit (Maruyama part #223031) *** Must use washer supplied with Tri-Clone and Ryobi hex nut **** May fit other trimmers with drive shafts similar to Stihl or Husqvarna