BQKKWIN 3 PCS Titanium Step Drill Bits Set with Automatic Center Punch, High Speed Steel Drill Bits Set for Sheet Metal with Aluminum Case, Step bits for Metal (with Bag） - KH-3J

• UPC   795890846738
• 【EFFICIENT OPERATION】Spiral step drill bit has good chip removal effect and hard material, fast cutting speed, strong practicability. 【Long Service Life】High-speed steel construction can extend the life of the cutting edge even under extreme temperatures. Blue coating enhances drill bits' resistance to heat, corrosion and rust. 【Easy Drilling】Two-Flute Design for smoother cutting. High Step design let you feel the stop and never drill bigger in mistake 【SET INCLUDES】Bit #1 (5 steps): 4-12 mm (4,6,8,10,12 mm). Bit #2 (9 steps): 4-20 mm (4,6,8,10,1214,16,18 20mm). Bit #3 (15 steps): 4-32mm (4,6,8,10,12,14,16,18,20,22,24,26,28,30,32mm) [Package included] 3 pieces of HSS recessed step drill bits (4-12 / 4-20 / 4-32 mm) + 1 automatic center punch. The 1/4" triangle shaft driver is suitable for all kinds of household DIY electric drills.