Feature
●YOKOCUT Step drill bits are 100% genuine HSS 4241. 100% SATISFACTION GUARANTEE Every Cortool product includes 60 days money back and 24 months warranty and friendly customer service.
●Perfect step drill bit suitable for drill holes in different materials: within 3mm (iron plate, copper plate, aluminum plate); within 5mm (wood, PVC board). Not suitable for hard and brittle materials such as stainless steel, glass, tile floors, walls, etc.
●HSS combined with a titanium coating. Very good and durable.
●Double-edged design for smoother cutting. The design with the high step design, you can feel the stop and never drill wrong.
●3pcs HSS Groove Step Drill Bit (4-12/4-20/4-32mm) + 1 Automatic Centre Punch 1/4" hex shank drives are suitable for all kinds of home drills.
[4 piece set with straight flutes]
Description
STEP DRILL SET FEATURES High speed drill bit titanium nitride coated steel replaces 28 separate drill bits Two fluted design for fast, smooth cutting. -- If you inject cold water while working, can effectively extend the life of the drill. Recommended drilling capacity of 250-250 RPM. -- 1mm thickness, can be operated with 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. -- Depending on your needs, you can process holes of different diameters, so you can process large holes at once without having to replace the drill and positioning hole. Specifications: Shank:1/4" Quick Change Hex Shank - Surface: Titanium - Material: HSS (Suitable for use in workpieces with a hardness of less than 25 degrees, such as iron plate, copper plate, aluminum plate, the thickness of the step plate is 3mm and wood, PVC board, insulation boards with thickness of 5mm or less). Cannot be used on hard and brittle materials such as stainless steel, glass, tiles, walls, etc. -- Dimensions: 4-12, 5 steps (diameter 4, 6, 8, 10, 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, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 1616, 16, 1. 8, 20, 22, 24, 26, 28, 30, 32mm) - Automatic Center Punch :7.4 x 2.6 x 0.7 inch Package Content 3 x Hss Step Drill Titanium Hole Cutter Set 1 x Automatic Center Punch