Drills By YENJO

• Package Content: Drill bit #1 (5 steps): 4-12mm (4mm, 6mm, 8mm, 10mm, 12mm); Drill bit #2 (9 steps): 4-20mm (4mm, 6mm, 8mm, 10mm, 12mm, 14mm, 16mm, 18mm, 20mm); Drill bit #3 (15 steps): 4-32mm (4mm, 6mm, 8mm, 10mm, 12mm, 14mm, 16mm, 18mm, 20mm, 22mm, 24mm, 26mm, 28mm,30mm,32mm). All products are placed in a blue bag for your convenience in storage and use.
• ?Spiral Flute Design: The Spiral-flute design prevents metal fillings from flying around and clears chips faster thus it can drill more smoothly without heating up. Stepped grooves prevent slippage in the chuck.
• High Speed Steel: This step drill bits set are made of HSS with titanium coating. And it performs well in heat,corrosion and rust resistance. Provides better and faster drilling performance.
• Widely Application: Our step drill bits is perfer for home repairs and light jobs such as drilling holes in various material?Iron plate, copper plate, aluminum plate within 3mm/0.12 inches;Wood, PVC boards, insulation boards up to 5mm/0.2inches. Please Note: Not suitable for hard and brittle materials such as stainless steel, glass, tile floors, walls etc.
• ?Hex Shank: Hex shank fits into all power tools more easily and securely, especially for locking into quick change chuck. It is better clamped on the pistol drill to prevent slippage and shedding during the rotation.

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