Features Multipurpose Tool: The design of the drill bit is 135 degrees, and the drill tip takes into account both the drilling body and tapping functions. High Speed Steel Material: The drill tap is made of high speed steel, with high hardness, no deformation, rust resistance and wear resistance, strong and durable. Smooth Surface: The smooth surface of the drill makes the tapping process smoother and is designed for assembly line production, making it a very practical tool. 6 Specifications: The kit includes six different tapping bits in different sizes, each of which is clearly marked with specifications for you to choose from. Wide Application: This drill bit can be used in thick cast iron, thick steel, die steel, stainless steel, aluminum alloy, iron and other tapping work, a wide range of applications. Specification: Item Type: Hex Shank Combination Drill Tap Material: HSS Application: Used for thick cast iron, thick steel plate, die steel, stainless steel, aluminum alloy, iron and so on Tap Size: M3, M4, M5, M6, M8, M10 Package List:1 x Connecting Rod 6 x Tap1 x Plastic Box Package List 1 x Connecting Rod 6 x Tap 1 x Plastic Box