Cobalt Coating Step Drill Bit High Speed Steel Hex Shank Hole Punch for Stainless Steel Aluminum Metal Wood 6-35mm

• HIGH QUALITY MATERIALS:This step drill bit is made of high speed steel material, which has high wear resistance, high toughness and high strength flexibility.
• TIPS:Hand drills and drills can be used for opening stainless steel, and plates with a diameter of 1 mm or less can be opened with a hand drill, and a 2-3 mm plate can be opened with a bench drill.
• IMPRESSIVE FEATURES:No need for center punch, not easy to break, can be used for deburring, chamfering and opening.
• COBALT COATING:Cobalt coating ensures outstanding durability and sharpness, can reduces the friction, runs cooler.
• WIDE RANGE OF USES:This step drill bit is widely used for perforating various materials, such as stainless steel tapping steel, wood, thin iron, aluminum alloy, moisture-proof board, PVC board, etc.

Specification: Item Type: Step Drill Bit Material: High Speed Steel Standard(Optional): 3-12, 4-12, 4-20, 4-22, 6-24, 4-32, 6-35 Package List: 1 x Drill Bit