High precision base metal and special tip for maximum long cutting and finishing. The sash can also be cut perfectly. Outer Diameter: 10.2 inches (260 mm); Blade Thickness: 0.1 inches (2.4 mm); Hole Diameter: 1.0 inches (25.4 mm); Number of Blades: 3.9 inches (100 mm); Maximum Rotational Speed: 1.8 inches (3,700 mm); Cutting Capacity: Iron, Steel, Chip: Carbide [Uses] Right angle cutting of all aluminum building materials