Versatile trimmer head that cuts grass, bushes, and trees. It weighs 1.2 lbs and is designed to sit on the ground for easy trimming. Compatible with most brand name straight shaft trimmers including: Craftsman, Cub Cadet, Echo, Honda, Hitachi, Homelite, Husqvarna, Jonsered, Makita, Maruyama, MTD, Redmax, Shindawa, Stihl, TMC, Troy-Bilt *requires a steel plate adapter (Echo part#C535000100) must purchase separately. Straight shaft lithium battery powered trimmers: Echo V58, Milwaukee M18 Fuel String Trimmer, Husqvarna 536 LiLX, Ryobi 40V X Lithium-Ion String Trimmer, Stihl FSA 130 R. Revesre Centerlock nut is included. (1.00mm for Stihl and 1.25mm for all others)