【Brush Cutter Kit Size】5mm L-wrench size: 128mm/5.04in, T-wrench size: 140mm/5.51in, driver plate diameter: 80mm/3.15inch, Collar Nut Diameter: 25mm/0.98inch, Thrust Washer Diameter: 42mm/1.65inch. 【Suitable Replacement】This blade attachment kit is designed to attach many types of blades to weeder, edger, brush cutter, grass trimmer and lawn mower. 【Easy to Install】Replacement Brush Cutter Adapter Maintenance Kit. Adapter retainer washer plate service kit for Stihl Brushcutter. 【Good Compatibility】Stihl Grass Trimmer Installation Aid. Fits the following models: Stihl FS40C FS55R FS56R FS36 FS80 FS81 FS85 FS90 FS10 FS110 FS120 FS130 FS130R FS200 FS200R FS250 Sarlo SS-18 Specification: Material: Plastic + Steel Rider plate diameter: 80mm, Collar nut diameter: 25mm, thrust washer diameter: 42 mm Compatible with: for stihl echo ryobi brush cutter Package includes: 1 x thrust washer, 1 x rider plate, 1 x thrust plate, 1 x collar nut, 1 x T-wrench