Step Drill Bits High Speed Steel Titanium Coated Bit Power Accessory Hex Shank 4 20mm

【MATERIAL】The step drill bit is made from high speed steel of high hardness and good wear resistance 【COATED SURFACE】Surface is coated with titanium which give the drill bit a beautiful gold color and will not fade easily 【APPLICABLE SIZE】This single drill bit can be used for drilling a wide range of hole sizes from 4mm to 20mm 【APPLICABLE MATERIAL】The Step Drill Bit is most commonly used on softer materials such as thin iron sheet, aluminum, PVC and wood board of 4mm or thinner 【APPLICATION】Step drill is great for use in work where thin steel, aluminum or plastic boxes and chassis are encountered