Features:High Speed Steel blades set for accurate, fast and precision cuttingSuitable for timber, plastic, fiberglass, copper, aluminium !#!amp!*! thin sheet metal etc. soft metalAn indispensable tool for carving workMaterial: High speed steelProduct Size: 22 (25 / 32 / 35 / 44) x 1 x 6.35mmExtension Rod Diameter: 3.175mmPlease Note:Must tighten the screw before using it. Because electric mill is a high-speed operation tool, with a certain risk.Further, the rod must be clamped at the position of two-thirds above. Speed must be controlled within 20,000 rpm.Do not press hard cut to hard things, remember the safe operation is the first. Please take good protection measures.Package Weight : 56 G / 1.98 OuncesPackage Dimensions (L*W*H) : 185*11*10 MM / 7.28*0.43*0.39 InchesPackage Include:1 x HHS Saw Blade (22 x 1 x 6.35mm)1 x HHS Saw Blade (25 x 1 x 6.35mm)1 x HHS Saw Blade (32 x 1 x 6.35mm)1 x HHS Saw Blade (35 x 1 x 6.35mm)1 x HHS Saw Blade (44 x 1 x 6.35mm)1 x Extension Rod