Weed I light-duty replaces bump-and-feed gas trimmer heads. Fits curved and straight shaft models. Easy-to-install, no tools required. Excellent for grass and weeds, fits most Ryobi, McCulloch, Toro, Homelite, and Echo gas models. For specific model assistance call CMD Products, 800/210-9949. Refer to model No. 3610 (SKU 700078) for replacement blades.