200mm 7-7/8" M42 High Speed Steel Bi-Metal Hole Saw Drill Bit for Wood Plastic Fasteners Assortment Kit tear off the protective film

tear off the protective film to achieve high-definition transparency and fit assembly

The best operate time is in 2 seconds

4 x Straight Inside Connector

Note: Please confirm the correct size before ordering

-30°C to 120°C operating temperature

200mm 7-7/8" M42 High Speed Steel Bi-Metal Hole Saw Drill Bit for Wood Plastic Fasteners Assortment Kit tear off the protective filmThe 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