Push-N-Load 3 blade head fits 99% of all straight and curved shaft gas trimmers. Easy-to-install; no tools needed. 3 extra blades included. Fits Ariens, Bolens, Echo, Husqvarna, John Deere, Lawn Boy, MTD, Poulan, Solo, Stihl, Toro, Troybilt, and Weedeater brands. Refer to Model No. 70283 (SKU 757362) for Do it Best replacement blades.