Specification:
Item Type: Spiral Step Drill Bit
Material: High Speed Steel
Purpose: Step Drill Set
Colour: Black
Drill Bit Type: Step Drill
System: Metric
Step Drill Size: Approx. 4-32mm / 0.15-1.25in, 4-20mm / 0.15-0.78in, 4-12mm / 0.15-0.47in
Features:
1Nitrided high speed steel is combined with titanium coated design, which is more sturdy and durable. 2With two flute design, which provides smoother and faster drilling, high step design makes you feel the stop, never drill bigger in mistake. 3Used with pistol drill or bench drill, water it to cool while working to prolong its life, the proper drilling speed is 250 to 400 rpm. 4Suitable for these workpieces that hardness is lower than 28 degree and the thickness is beyond 5mm, such as thin steel board, wood, thin iron, aluminum alloy, insulation board, PVC plate, etc. 5With high hardness and unique stepped structure, you can use one drill to open a aperture with different size.
Package List:
3 x Spiral Step Drill Bit
