Domary Spiral Grooved Step Drill Bit Set - High Speed Steel Titanium Coated 3pcs 4-32mm/4-20mm/4-12mm

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. 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