ESPLB 3pcs HSS Cobalt Step Drills Bit 4-32MM High Speed Steel Nitrogen Spiral Triangle Shank Drill Bit Set for Metal Cone

Product description

No need for a pilot hole;Titanium coated to reduce friction and run cooler
Large bit has 3 sided shank.
Automatically deburr holes as you drill
High speed steel,durable.

Specification :
Color : Black
Material : High Speed Steel(HSS)
Surface : Nitrogen treatment (increasing the hardness and abrasion resistance)
Shank:Triangle round handle
Scop : thin iron plate,aluminum,insulation panels,PVC panels 4mm thickness within the timber.
Type:
4-32mm(4,6,8,10,12,14,16,18,20,22,24,26,28,30,32mm),Shank:25 x 10mm
4-20mm(4,6,8,10,12,14,16,18,20mm),Shank:20 x 8mm
4-12mm(4,6,8,10,12mm), Shank:20 x 6mm

Package included :
1 x 4-12mm Spiral Grooved Drill
1 x 4-20mm Spiral Grooved Drill
1 x 4-32mm Spiral Grooved Drill