Bi-Metal Hole Saw 130mm (5-1/8") M42 HSS (High Speed Steel) Hole Saw Drill Bit Cutter for Wood Plastic Metal Sheet Plasterboard Linear Bearings Increase the height of the

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Bi-Metal Hole Saw 130mm (5-1/8") M42 HSS (High Speed Steel) Hole Saw Drill Bit Cutter for Wood Plastic Metal Sheet Plasterboard Linear Bearings Increase the height of theThe bi metal hole saw combines high speed steel and cobalt. The hole saw body is made of superior grade M42 high speed steel, which has excellent hardness, wear resistance, and heat resistance. The cutting edges or teeth are made of a cobalt alloy, which further enhances hardness and heat resistance. The sprayed coating resists rust and corrosion. Sharp toothed edges allow for smooth, fast and easy cuts. Bi metal hole saws have larger numbers of