Features:*The drill has 2 functions of reaming and chamfering, which can improve the processing efficiency, and the second stage angle is 180 degrees.*For example, for drilling 2 holes, the installation of six angle nut, etc., can replace more than drill.*The countersunk head is made of HSS, which can process metal or non-metal products below 30 degrees HRC,such as cast iron, tool steel, copper and aluminum, alloy steel, iron, die steel and so on.Specifications:*Product Name: Spiral step drill bit*Material: M35-Co*Color: Gold*Degrees: 180*Size: M3/M4/M5/M6/M8/M10/-M12 (Optional )*Suitable for: Drilling, Chamfering*Quantity: 1 PcPackage Content:1 × Spiral step drill bitNote:1. The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness.2. Please allow slight manual measurement deviation for the data.