?Universal Brush Cutter Blades Weed Eater Blade??Out Diameter:255mm/10inch, Arbor Bore Size: 25.4mm/1inch, Also suitable for 20mm/0.79inch with attached washer, Blade Teeth:80T. ?Two Different Adapter Kits Totaling 14 Parts??Two 10inch Trimmer Cutter Blades are delivered with two sets of installation accessories, fit most of the gas or electric trimmers (Straight shaft trimmers only). Blade Adapter Attachment Kit: 1 x Thrust Washer(10 teeth)/ 1 x Rider Plate/ 1 x Collar Nut/ 1 x Screwdriver/2 x attached washers. Universal Blade Adapter Kit: 1 x Thrust plate guard washer (6 teeth)/ 1 x Thrust washer/ 1 x Rider plate/ 1 x Lock nut/2 x attached washers. ?Quality Material and Durable??Our weed eater blades is made of high quality carbide tipped material. Sharper and more durable, impact and wear resistance. Easy to use and install, suitable for organizing your garden or for agricultural purposes. ?Wide Range of Applications??Our trimmer blades not only work for removing grass, trimming lawn, but also used for cutting woods and trees. Our weed eater is ideal designed for fast and easy cutting of small trees, heavy brush, thick weeds and grass. fit most of the gas or electric trimmers. ?High-Quality Service ??If you have any questions, please feel free to contact us, we will do our best to help you. 30-day money-back guarantee. You may return your undamaged product and packaging within 30 days of purchase to receive a refund. No question asked.