5pcs 6.5mm Nitride Titanium Coated High Speed Steel (HSS) 4341 Twist Drill Bits 9mmx9mm Rated Load: 5 VA

Rated Load: 5 VA

Thread Size: 3/8" x 2"

non-retaining key

Product Name: Door Viewer

This switch is easy to assemble on the electric hand drill and convenient for usage

5pcs 6.5mm Nitride Titanium Coated High Speed Steel (HSS) 4341 Twist Drill Bits 9mmx9mm Rated Load: 5 VA4341 high speed steel contains high content of carbon and alloy elements, providing excellent cutting performance, high heat resistance, high hardness, wear resistance and durability. Suitable for applications requiring precise and efficient processing. Black nitride and gold titanium dual coatings can apply lubricant better for smoother drilling and are more durable and corrosion resistant. Large spiral grooves facilitate the export of metal chips,