Carbide Tip 10″ Brush Cutter Trimmer Blades 40 T w/ 1″ or 20mm Bore Adapter This Two Pieces steel blades are aftermarket replacement blades, will fit any Trimmer-Brushcutter that takes a 1″, 25.4mm or 20mm arbor (includes almost all straight shaft trimmers including stihl, husky,shindaiwa,echo or any other brand models).High quality and good price. Smooth surface finish Replacement brush cutter blade Helps cut through tough weeds and brushwood in anywhere you need Made of hardened steel Here are four holes with feather shape design Specifics : 1.Diameter: φ255MM(10″) 2.bore: φ25.4MM(1″) – also comes with a 20mm gasket! 3.Thickness: 1.5MM 4.Teeth: 40T 5.Color: Silver gray 6.Power Type: Petrol / Gas Package Include: 2× Carbide Tip 10″ Brush Cutter Trimmer Blades 40 T