【Brush Kit Size】5mm L-wrench size: 128mm/5.04in, T-wrench size: 140mm/5.51in, Drive plate diameter: 80mm/3.15in, Ring nut diameter: 25mm/0.98in, Thrust washer diameter: 42mm/1.65in. 【WHAT YOU WILL GET】 This knife parts set contains 1 thrust washer, 1 rider plate, 1 ring nut, 1 5mm L wrench, 1 T wrench, it does exactly what it needs to do and is well made. 【SUITABLE FOR REPLACEMENT】This blade attachment kit is designed to attach a wide variety of blades to lawn mowers, trimmers, brush cutters, lawn mowers and lawn mowers. 【Easy to install】 Replace the brush blade adapter maintenance kit. Adapter retainer seal plate maintenance kit for STIHL brushcutters. 【Good compatibility】 Stihl Lawn Mower Installation Aids. Compatible with the following models: Stihl FS40C FS55R FS56R FS36 FS80 FS81 FS85 FS90 FS10 FS110 FS120 FS130 FS130R FS200 FS200R FS250 Sarlo SS-18.