6PCS Titanium Step Drill bits Set for metal HSS High Speed Steel Hex Shank Step Drill Set 4-12mm 4-20mm 4-32mm

Widely Used Perfect Step Drill Bits suitable for drill holes in various material within 3mm/0.12 inch Iron Plate, Copper Plate, Aluminum Plate), within 5mm/0.2 inch Wood, PVC sheet, Insulation Boards). Not suitable for hard and brittle materials such as stainless steel, glass, tile floors, walls etc. Material HSS combined with a titanium coating. More capable and durable. Hexagonal Design: 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. SET INCLUDES Bit 1 10 steps): 3-12mm 3mm, 4mm, 5mm, 6mm, 7mm, 8mm, 9mm, 10mm, 11mm, 12mm), Bit 2 9 steps): 4-20mm 4mm, 6mm, 8mm, 10mm, 12mm, 14mm, 16mm, 18mm, 20mm), Bit 3 5 steps): 4-12mm 4mm, 6mm, 8mm, 10mm, 12mm, 1 Automatic Spring Loaded Center Punch Power Tools. One-Year Warranty: For customer satisfaction and 1-Year warranty of step drill kit can be guaranteed. If you have any questions, Pleas