What's in the box:

1 X Spiral Grooved Step Drill Bit Set 4mm to 12mm/20mm/32mm Wood Metal Plastic Drilling Hole Titanium Plated Hex Shank Drill Bit (Standard), Standard

This is set of step drills made of high speed steel 4241/6542, different specifications can meet different drilling requirements. Widely Used To Cut Holes In A Variety Of Material Like Steel, Wood, Thin Iron, Aluminum Alloy, Insulation Boards, PVC Sheet, etc.

Features:
Easy to install, suitable for most of electric drill.
Constructed of industrial high speed steel with titanium nitride coating for durability and strength to punch and drill clean holes in materials like plastic, aluminum, wood, copper, stainless steel and other types of sheet metal.
Two-flute spiral grooved design deburrs chip, dust and debris for clearance and smooth cutting.
Quick change hex shank makes for easy, convenient bit switches and is compatible with impact ready power tools.
Assortment comes with 3 drill bits of a combined 33 sizes to add to your drilling arsenal: 4-32mm(4,6,8,10,12,14,16,18,20,22,24,26,28,30,32mm), 4-20mm(4,6,8,10,12,14,16,18,20mm), 4-12mm(4,5,6,7,8,9,10,11,12mm).

Specifications:
Material: High Speed Steel
Color: Golden
High Speed Steel 4241: Suitable for use in hardness 25 degree below the workpiece
High Speed Steel 6542: Suitable for use in hardness 28 degree below the workpiece
Surface Treatment: Titanium Coated
Structure: Step Core Drill Bits
Suitable for use: Thin iron plate, aluminum, insulation panels, PVC panels 5mm thickness within the timber
Quantity: 3pcs
4-32mm (4,6,8,10,12,14,16,18,20,22,24,26,28,30,32mm)
4-20mm (4,6,8,10,12,14,16,18,20mm)
4-12mm (4,5,6,7,8,9,10,11,12mm)
4-32mm drill size: 10.22*3.15*3.15cm
4-20mm drill size:7.16*1.93*1.93cm
4-12mm drill size: 7.35*1.16*1.16cm
Product weight: 215g
Package size: 11.3*4.8*2.8cm/4.44*1.88*1.10in
Package weight: 217g

Note:
Item color may show sight aberration due to different shooting light and monitor display.

Packing list:
1* 4-32mm drill
1* 4-20mm drill
1* 4-12mm drill