Specifications: Condition: 100% Brand New Material: Plastic + Steel Connection Plate Diameter: 80mm Tightening Nut Diameter: 25mm Thrust Washer Diameter: 42mm Different Sizes Than Shown Compatible With: For Thermo Stihl Echo Ryobi Brush Cutter Fits the following models: Stihl FS40C FS55R FS56R FS36 FS80 FS81 FS85 FS90 FS10 FS110FS120 FS130 FS130R FS200 FS200R FS250 Sarlo SS-18 Fits the following models: FS 87, FR130T, FR220, FR350, FR450, FR480, FR85, FR85T, FS100, FS110, FS110, FS110RX, FS120, FS120R, FS130, FS130R, FS200, FS200R, FS250, FS250R, FS25-4, FS44, FS44R, FS55, FS55R, FS56, FS56R, FS65, FS74, FS76, FS80, FS80R, FS83, FS83R, FS83T, FS85, FS85R, FS85RX, FS85T, FS87R, FS90, FS90R, FS90RZ, FS90Z, FS100R, FS120R, FS200, Combi System Attachment Package Includes: 1 x Protective Cover 1 x Washer with Cap 1 x Guide Plate 1 x Pressure Plate 1 x Collar Nut 1 x T-Wrench 6pcs High Quality Replacement Metal Blade Attachment Kit for STIHL Brush Cutter, for STIHL FS55 FS56 FS120 FS130