Chiloskit Large Step Drill Bit, High Speed Steel Unibit Step Drilling Bit Set for Metal Hole Cuter Wood Hole,4-52mm

Chiloskit Large Step Drill Bit, High Speed Steel Unibit Step Drilling Bit Set for Metal Hole Cuter Wood Hole,4-52mm

[Widely use] The step drill bits help you to drill holes with different diameters simultaneously, compatible with aluminum, copper, steel sheets and plastic and wood board that is less than 3mm/0.12 in. in thickness. (Not for Stainness steel ! ) [Made of High Speed Steel]high speed steel along with the titanium coating ensures extreme durability, will made the hole drill bit stay new and shiny for years to come [No Pilot Hole Required] This metal drill bit set for steel Self-starting & non-walking spilt point tip design helps you start drilling quickly.A unique staircase structure, a drill to open a variety of size aperture size, a step drill drill arrived on a box. [TWO-FLUTE DESIGN]: clears chips faster and allows particles to escape easily. the drill bit is sharp and can easily drill perfect holes in the metal sheet while the Titanium coating improves durability hence lengthening the service life.2-year warranty, free replacement. [Multi Hole Sizes]: No need to buy a kit. This one step bit comes with 13 marked sizes so you can drill 5 different hole sizes, saving you time and efforts to change bits. Marked sizes including: 4-52MM HSS 4-52MM Titanium Step Drill Bit, High Speed Steel, Total 12 Step Sizes
Material: High speed steel
Cutting material: thin iron plate, aluminum, insulation board, PVC board wood thickness of 4mm. With a drill to play a variety of holes.