3pcs Lot HSS Metric Spiral Flute Step Drill Bit Set 4241 Steel Titanium Coated Step Drill Bit Set 4-12mm 4-20mm 4-32mm

 

100% High quality and Brand new.

Step drill is mainly used for drilling within 3mm sheet steel, and a drill bit can replace the use of multi-branch, machining holes of different diameters as needed, and to achieve a large hole to complete a one-time process, no need to replace the drill bit and hit the positioning hole and so on.

Manufacturing: current overall ladder drill using CBN grinding whole manufacturing, the main material for high-speed steel, carbide, high precision machining, according to different processing conditions can be surface coating to extend tool life, increase tool life sex.

The scope of products and industries:

Products can be used in automotive machining, aerospace, metal processing, installation and maintenance of electrical and other industries, and products to meet the high-altitude operations easy to carry with hand drills and other tools.

 

Specification

 

This auction is for Three (3) pieces of New Titanium Coated Step Drill Bit that covers 28 sizes

These Step Drill Bits are ideal for variety of materials from metal, plastic, fiberglass to wood

They also help to enlarge existing holes

The two flute design tips made the penetration faster without chipping

Sizes of the 3 Step Drill Bits:

Color: Golden (as picture shown)

Material: High speed steel 4241

Quantity: 3PCS

# 1: 4mm to 12mm 9 Steps (4mm, 5mm, 6mm, 7mm, 8mm, 9mm, 10mm, 11mm, 12mm)

# 2: 4mm to 20mm 9 Steps (4mm, 6mm, 8mm, 10mm, 12mm, 14mm, 16mm, 18mm, 20mm)

# 3: 4mm to 32mm 15Steps (4mm, 6mm, 8mm, 10mm, 12mm, 14mm, 16mm, 18mm, 20mm, 22mm, 24mm, 26mm, 28mm, 30mm, 32mm)

Length:

4mm to 12mm 9 Steps Length: 7cm

4mm to 20mm 9 Steps length: 7cm

4mm to 32mm 15 Steps length: 10cm

 

Package Includes

 

3 X Step Drill bits