190mm 7-1/2" M42 High Speed Steel Bi-Metal Hole Saw Drill Bit for Wood Plastic 3mmx8mmx4mm Jointing Size: 10

Jointing  Size: 10

54"(L*W*H)

* Please select the appropriate grinding wheel for appearance and sound inspection before installation

* 50(+/-2%)pcs x Crystal Upholstery Buttons

The included pipe is made of plastic

190mm 7-1/2" M42 High Speed Steel Bi-Metal Hole Saw Drill Bit for Wood Plastic 3mmx8mmx4mm Jointing Size: 10The 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