Trim like a pro with the Pro Cut Fixed Line String Head. This convenient fixed-line trimmer head attaches to most gas string trimmers for efficient trimming and easy line replacement. The preference of many homeowners and professionals, the fixed-line design of this string head allows the user to reload string in seconds simply by inserting strips of line directly into the head. This kind of trimmer head allows you to continue trimming without having to reload by winding, or feed line by bumping. Fits Ryobi, Homelite and other brands of gas string trimmers.