Product Name: Straigth Shank Step Drill
Product Material: W6542 Steel
Type: Countersink Drill Bit
length: 65115
Use: Metal Drilling
Material: High Speed Steel
Machinable material:It can process metal and non-metallic materials below hardnees 35 degrees, such as cast iron, tool steel, 45# steel, mold Steel and so on.capper, aluminium,