190mm 7-1/2" M42 High Speed Steel Bi-Metal Hole Saw Drill Bit for Wood Plastic M3x12mm+6mm Clamp Height:

Clamp Height:

Tight adjustable steel push rod is used for rc airplane

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Good for use in confined areas where the head needs to be flush or below the surface

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190mm 7-1/2" M42 High Speed Steel Bi-Metal Hole Saw Drill Bit for Wood Plastic M3x12mm+6mm Clamp Height:The 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