Draper 71220 4-20mm step drill bit

SIZE 4-20mm Bits. 9 Steps Drill Bit.

Application Suitable for sheet metal, sink, car repair, etc. Widely used to cut holes in a variety of material like plate, aluminum, insulation board, PVC board, the thickness of wood within 5mm.

Application Perfect for home DIY and general building supervision engineering use. Suitable for use of drilling Cut or enlarge holes in materials like thin steel, wood, thin iron copper, aluminum, PVC, etc.

Erbauer Spiral Flute Step Drill Bit 4 20mm by Erbauer

VERSATILE 3PCS SET - Includes three step drill bits with varying sizes #1 (1 4" - 5 16" - 3 8" - 7 16" - 1 2"), #2 (1 4" - 9 32" - 5 16" - 11 32" - 3 8" - 13 32" - 7 16" - 15 32" - 1 2"), and #3 (5 16" - 3 8" - 7 16" - 1 2" - 9 16" - 5 8" - 11 16" - 3 4" - 13 16"- 7 8"). These metal drill bits come in a box so they can be storage well.

Brand Draper

M35 HSS & Cobalt - M35 High speed steel makes it last longer than others, cobalt ensures easily cut through steel sheets, aluminum sheets, copper & plastic & wood board and many other types of sheet metal with ease.

HSS (high speed steel) with a titanium (Tin) coating - The titanium coating makes it easier to drill materials and also gives an improved tool life. Where possible use coolant to increase the tool life even further.

Dual Spiral Flute Design for super fast and smoother cutting. High Step design let you feel the stop and never drill bigger in mistake.

Premium Material This step drill sets are made of outstanding strong HSS steel material and coated with Titanium, which are wear-resistant, corrosion-resistant, rust-resistant, sturdy, and durable for long time use.

You can use water to cooling it when it is work and it can be used for even longer.

Advantage HSS-TiAlN step drill combines the strengths of high-performance high-speed steel (HSS) with the modern TiAlN coating to create a powerful tool for stainless steel, metal sheets, wood, plastic, aluminum, copper and other metal sheets

WHAT YOU GET 1 x Aluminum Case, 1 x 4-12mm, 1 x 3-13mm, 1 x 3-19mm, 1 x 5-22mm, 8-35mm Step Drills, 1 x Automatic Center Punch and 1 x Twist Drill Bit.

Easy to Use The step drill bit for metal fits into power tools chuck securely and avoid slip. Step cone drill bits design for precision drilling different size holes, optimum speed, and accuracy.

For Drilling steel, brass, copper, aluminium, wood and plastics , Do not need to use center punch, compared with the ordinary twist drill is not easy to be broken.

Hex Shank Step drills are hexagonal shank.Easy to install, suitable for most of electric and bench drill, hand drill.It can be clamped to power tools such as electric screwdrivers.

High speed steel makes the step drill set more durable, titanium coating ensure to easily cut through steel sheets , aluminum sheets, copper & plastic & wood board and many other types of sheet metal.

split point

Cross-point

The drill bit is suitable for drilling through holes and centring holes