4PC 4-12/ 4-20/ 4-32/ 4-39mm HSS Titanium Coated Step Drill Bit Set For Metal

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4PC 4-12/ 4-20/ 4-32/ 4-39mm HSS Titanium Coated Step Drill Bit Set For Metal  Technical Specifications
Cutting materials: thin iron plate, aluminum, insulating board, PVC board, wood thickness is within 5mm.
Various specifications of holes can be drilled with a drill bit.
Specification: 5-35mm (13 steps: 5, 7, 10, 12, 15, 17, 20, 22, 25, 27, 30, 32, 35mm)

Step drills are designed for drilling repetitive holes in steel, stainless steel, copper, brass, aluminium, plastic, plexiglas, laminates and many other thin materials.
Manufactured from premium quality high speed steel with double fluted ground cutting edges for long service life.
No pilot hole required.
Easy to sharpen.
Stepless drilling in the thinnest sheets.
Burr-free drilling without sheet deformation.
Automatic deburring.
Spiral flutes enable easier tool penetration.

For fast, accurate drilling into hard materials like stainless steel, copper, or aluminum without the hassle of changing bits, the 3-piece spiral step drill bit set is the perfect choice. These bits feature a 2-flute design for quicker material removal and cleaner, more precise holes. Made of high-speed steel with a durable titanium coating, they offer long-lasting performance. The 3-flat shank prevents slipping in the chuck, while the new speed point tip ensures smooth, efficient drilling.

1.It is produced by different kinds of materials, such as HSS 4241, HSS 4341, HSS 6542(M2), HSS M35, HSS M42.
2.Different sizes of the Shank: 1/4″ Hex Shank, 7/8″ Hex Shank, Triangle Shank, Round Shank, Square Shank and so on.
3. It is ideal for drilling thin stainless steel plates, aluminum plates,plastic, wood, non-combustible materials, expanding holes, drilling holes, and processing curved surfaces such as pipes.
4.Since the hole is gradually expanded from a small hole to a large hole, drilling of multiple sizes and expansion of the hole are possible.The bite to the tip of the bamboo shoot drill is also finished to feel better than ordinary drills.
5.Step drills two-flute spiral grooved design is deburrs chip, dust and debris for clearance and smooth cutting.
6.118 degree pointed angle with right hand cutting.

1.HSS step drill bits are more expensive than other drill bits, but if you regularly drill through metal, they are a good investment since they tend to last longer.
2.No center punch is needed—the aggressive 135° and 118° Quick-Cut points are self-centering and penetrate quickly with less pressure. Will not “walk” or “wander”.
3.Precision ground point, flutes, body, clearance and drill diameter for the ultimate in accuracy and performance.
4.Hex-shank drill bits design have a hexagonal shank that provides maximum surface contact with a drill chuck on handheld power tools. This prevents the bits from slipping in the chuck during drilling. Drill bits with a hex shank insert into a standard 3-jaw drill chuck or a drill chuck specifically designed for hex shanks.
5.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

What is a step drill bit?
A step drill bit allows you to drill different sized holes with a single bit. The bit is cone like shaped, so the further you drill into the material, the wider the hole will get. 3pcs Spiral Step Drill Bit Set

It is a very small and handy accessory for any professional tradesmen, and can be used in many applications, especially when drilling through sheet metal. For example, an electrician may use these for drilling the correct size hole in a junction box and panel, or by an automotive technician when carrying out installations and repairs. Quick Change Hex Shank Spiral Flute Step Drill Bits

Tradesmen love step drill bits as they improve working efficiency as there is no need to change the drill bit to get the correct size hole. Step Drilling Bit Set Metric Spiral Flute Hex Shank HSS