Feature:
Sharp and spiral cutting edge provides neat and smooth cuts.
Black Oxide Finish - Black oxide surface treatment holds up better lubrication for smoother drilling.
Wide application for drilling of stainless steel, die steel, I-steel, ordinary steel, Angle iron, rubber, plastic, aluminum, copper, wood, and other materials.
Please Note: To make clean and precise holes, water is required for lubrication and cooling when drilling metals. Increased use of water lubrication will extend drill bit life.
Use tips: 1, if the drill material is hard, first use a 3-6mm drill bit to make a small hole, and then use a large drill bit to reexpand the hole.
2, drilling hard drill speed should be between 80-120 effect is good, the greater the number of RPM can not drill down, burn the drill bit.
​ 3, because stainless steel contains more alloy components, its hardness and mechanical properties are higher, the need to apply enough pressure and motor power when drilling with a hand drill is large enough, it is easy to use a bench drill.
4, When drilling with cobalt head with equal handle, add water or coolant to cool the drill to prevent the drill bit from burning out..

Specification:
Product Name: Reduced Shank Drill Bit
Material: 9341 High Speed Steel
Cutting Diameter: 18mm / 0.7”
Drill Shank Diameter: 12.7 mm / 1/2”
Overall Length: 150mm / 5.9”
Shank Type: Round Shank

Package Included:
2Pcs x 18mm Reduced Shank Drill Bit