Residential grade trimmer line• More durable• Compatible with all brands• Scientifically engineered to last longer• Used for trimming or edging grass. All Purpose multi edged trimmer line by Weed Warrior is a high performance trimmer line modified to outperform other residential lines. Scientifically engineered to be more durable than other residential trimmer lines. Impact modifiers are embedded within the nylon to keep your line from breaking away when trimming against obstacles as often as other products on the market. That means cutting more with fewer stops to get the job done faster, leaving you more time to do the things you want. .065" diameter is designed to fit most cordless and electric trimmers and works with all brands to include Hart, Hyper Tough, Black Max, Snapper, Craftsman, Murray, Poulan Pro, Weed Eater, Husqvarna, Echo, Stihl, Ryobi, Cub Cadet, Black & Decker, and more. Weed Warrior trimmer line is proudly made under tight quality controls with innovative lawn and garden industry string trimme line products backed by decades of R&D, innovation, and industry leading quality.