3-tooth weeder blade compatible with Stihl, Echo 1" (25.4mm) or 20mm shanks. The trimmer blade adapter replacement parts are as follows : Thrust washer: 4130-713-1600; Rider: 4126-713-3100; Lock nut: 4126-642-7600. 3.3 Toothbrush blades fit: Stihl FS120 FS130 FS130R FS200 FS200R FS250 string trimmers. The perfect kit for your Stihl mower. The 8 in. brush cutter blade is ideal for weeding, wacker, edging, weed trimming and brush cutter attachments. < p>Package includes 1 x trim brush blade + 1 x thrust washer + 1 x jumper plate and 1 x collar nut + 1 x screwdriver.