Bordo 4mm - 20mm x 90mm HSS Step Drill Bit

Bordo's range of step drills are ideal for electrical contractors, sheetmetal workers and auto mechanics. Step drills are designed for drilling repetitive holes in steel, stainless steel, copper, brass, aluminium, plastic, plexiglas, laminates and many other thin materials. Manufactured from premium quality high speed steel with double fluted ground cutting edge for long service life.
Size: 4mm (min) - 20mm (max) x 90mm (overall length).

Features:
- No pilot hole required
- easy to sharpen
- Step depth of 5mm
- Stepless drilling in the thinest sheets
- Burr-free driling without sheet deformation
- Automatic deburring