HSS Step Drill Bit Set - 3PCS 1/4" Hex Shank Titanium Coated High Speed Steel Hole Drill Cone Bits Stepped Up Unibit for Sheet Metal Hole Drilling

HSS Step Drill Bit Set - 3PCS 1/4" Hex Shank Titanium Coated High Speed Steel Hole Drill Cone Bits Stepped Up Unibit for Sheet Metal Hole Drilling

【Material】Made of high speed steel with titanium coating, ensure our step drills’ Durability. This also proves the capability and durability of the drill to last through multiple drillings on surfaces such as: plastic, aluminum, copper, stainless steel, and so much more. 【Easy Drilling】Two-fluted provide small pressure and make your drilling faster and smoother , a step drill can be used in a variety of hole sizes.High-step design allows you to stop and won’t drill big! 【SET INCLUDES】Bit #1 (6 steps): 3/16 inch-1/2inch (3/1 6inch, 1/4 inch, 5/16 inch, 3/8 inch, 7/16 inch, 1/2 inch);
Bit #2 (9 steps): 1/4 inch - 3/4 inch (1/4 inch, 5/16 inch, 3/8 inch, 7/16 inch, 1/2 inch, 9/16 inch, 5/8 inch, 11/16 inch, 3/4 inch);
Bit #3 (13 steps): 1/8 inch - 1/2 inch (1/8 inch, 5/32 inch, 3/16 inch, 7/32 inch, 1/4 inch, 9/32 inch, 5/16 inch, 11/32 inch, 3/8 inch, 13/32 inch, 7/16 inch, 15/32 inch, 1/2 inch) 【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. 【Package Included】 3-Piece HSS Groove Step Drill Bit Set . 1/4" Hex shaft drives are suitable for all kinds of for home DIY power drills. 3PCS Step Drill Bit Set:

Feature:
-- High speed, titanium nit-ride coated steel Replaces 28 separate drill bits Two fluted design for fast, smooth cutting.
-- When inject 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 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.

Specifications:
-- 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, aluminum 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.
-- MEASUREMENT:
Bit #1 (6 steps): 3/16 inch-1/2inch (3/1 6inch, 1/4 inch, 5/16 inch, 3/8 inch, 7/16 inch, 1/2 inch);
Bit #2 (9 steps): 1/4 inch - 3/4 inch (1/4 inch, 5/16 inch, 3/8 inch, 7/16 inch, 1/2 inch, 9/16 inch, 5/8 inch, 11/16 inch, 3/4 inch);
Bit #3 (13 steps): 1/8 inch - 1/2 inch (1/8 inch, 5/32 inch, 3/16 inch, 7/32 inch, 1/4 inch, 9/32 inch, 5/16 inch, 11/32 inch, 3/8 inch, 13/32 inch, 7/16 inch, 15/32 inch, 1/2 inch)

Package Included:
3 x Hss Step Cone Drill Bit Titanium Hole Cutter Set

Customer Service: Refund/ Replacement for ANY reasons. If you have any questions, please contact us.