Gardening Machine Lawnmower Blade Protective Cover Accessories Kit for Stihl String Trimmer BDR Trading Gardeing Machine String Trimmer Blade Protective Cover Accessories Kit Specification: Material: metal Size: 80x25mm. Thrust washer:4130-713-1600 Rider plate: 4126-713-3100 Collar nut: 4126-642-7600 Package Includes: 1 x Thrust Washer 1 x Rider Plate 1 x Collar Nut 1 x Screwdriver