Product name: 5pcs hexagonal shank titanium-plated spiral groove step drill
【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.
【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 (9 steps): 4-12mm (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 (15 steps): 4-32mm (4mm, 6mm, 8mm, 10mm, 12mm, 14mm, 16mm, 18mm, 20mm, 22mm, 24mm, 26mm, 28mm,30mm,32mm)
【Package Included】 3-Piece HSS Groove Step Drill Bit (4-12/ 4-20/ 4-32mm ) + 1 Automatic Center Punch. 1/4″ Hex shaft drives are suitable for all kinds of for home DIY power drills.
5Pcs Step Drill Bit Set
— High speed, titanium nitride coated steel Replaces 28 separate drill bits Two fluted design for fast, smooth cutting.
— Lubricating with cold water while working, can effectively extend the service life of the drill bit. Recommend drilling rate of 250-250 RPM.
— 1mm thickness can be operated by a hand drill, 2~3mm please use bench drill. The drill must continue to cool down when it is working, and it is not easy to burn.
— According to the need to process different diameter holes, you can achieve one-time processing of large holes, no need to replace the drill bit and positioning hole.
— Shank: 1/4″ Quick Change Hex Shank
— Finish: Titanium
— Material: HSS (Suitable for use in the hardness below 25 degrees workpiece, such as iron plate, copper plate, aluminium plate, the thickness of the plate of step is 3mm and wood, PVC sheet, insulation boards with a thickness of 5mm(0.2 inch) or less). Can not be used to hard and brittle materials such as stainless steel, glass, tile floors, walls etc.
4-12 9 Steps(Diameter 4, 5,6, 7,8, 9,10, 11,12mm)
4-20 9 Steps(Diameter 4, 6, 8, 10, 12, 14, 16, 18, 20mm)
4-32 15 Steps(Diameter 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30, 32mm)
— Automatic Center Punch: 7.4 x 2.6 x 0.7 inch
3 x Hss Step Cone Drill Bit Titanium Hole Cutter Set
1 x Automatic Center Punch
1 x Storage bag
Customer Service: Refund/ Replacement for ANY reasons. If you have any questions, please contact us.