200mm 7-7/8" M42 High Speed Steel Bi-Metal Hole Saw Drill Bit for Wood Plastic 74mm x 80mm 2 x Deep Groove Ball

2 x Deep Groove Ball Bearing

Description: [ Material ] - Made of silicon carbide

bottom halves and front and back panels

8pcs x Rubber Mounts

200mm 7-7/8" M42 High Speed Steel Bi-Metal Hole Saw Drill Bit for Wood Plastic 74mm x 80mm 2 x Deep Groove BallThe 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