HK 10"x3 T Brush Cutter Blade & 9" x36T Carbide Tip Brush Cutter Trimmer Blades Weed Eater Blades for Brush Cutter, Trimmer, Weed Eater Specifications: Brush cutter blade diameter is 9 inch&10inch. Arbor Bore Size is 1 inch. Blade Teeth is 36T&3T. Fit most brush cutter or weed eater.2 Pcs brush blades are made of premium stainless steel. Carbide tip is estimated to last about 10 times longer than plain steel.Our Brush cutter blades are great at cutting and pruning. Suitable for weed, brush, brambles and shrub.Compatible for Stihl 55, fs 55r, fs 56, fs 56rc, fs56 rc-e, fs 66, fs 70r, fs 76, fs 85, fs 90, fs 90r, fs 91, fs 91r, fs110, fsx110, fs 130R, fs131, fs 240, fs-km, 4mix; Husqvarna 128, 128L, 128LD, 224L, 324L, 323L. Package List: 1 x 10" 3 Teeth Carbide Tipped Blades, 1 x 9" 36 Teeth Carbide Tipped Blades 1 x Thrust Washer 1 x Rider Plate 1 x Collar Nut 1 x Screwdriver 1 x Trimmer Head Cover 1 x Fixed Plate (Down) Hexagonal Contour 1 x Fixed Plate (Up), 1 x Trimmer Locknut, 1 x Wrench Installation Steps Of Stihl Blade Adapter Kit: 1. Get your stihl string trimmer ready. 2. Place our weed cutter blades. 3. Place the thrust washer. 4. Place the rider plate and collar nut. 5. Tighten the collar nut. 6. The installation has been completed.