Reliable Material: This step drill bit is made of premium high speed steel material for good wear resistance and high hardness, which ensures a long service life
Coating: The surface of the hole drill bit is coated with to reduce friction and heat, maintain a refined appearance and it will not fade easily
Wide Application: This drill bit is widely used for soft materials such as thin iron sheet, aluminum, PVC and wood board of 5mm, ideal for use in work where thin steel, plastic boxes and chassis are encountered
Reasonable Design: Unique step structure makes it drill a wide range of hole sizes from 4 to 22mm; And the two-slot spiral groove design prevents slippage
Intimate After-Sales Service: Please feel to contact us by e-mail if you have any issue about the item; We will try our best to give you a satisfactory reply within 24 hours
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