For Drilling steel, brass, copper, aluminium, wood and plastics , Do not need to use center punch, compared with the ordinary twist drill is not easy to be broken.;Size: 4-22 mm6,8,10,12,14,16,18,20 22mm , Shank:6 mm (dia),25 mm(L), Total:75mm(L),Allow 1-3mm measurement error. Hex Titanium Step Cone Drill Bit Hole Cutter 4-22MM HSS,.;Work while water cooling, can effectively extend the service life of drill bit,recommend drilling rate of 250-250 RPM.;The ladder of its unique structure, a bit can open a variety of specifications of aperture.;Top Quality, UK Stock, Fast Dispatch, 100% Money Back Guarantee , Shipped By Amazon.

• ACENIX High Speed Step Dril Bit 4-22MM HSS 4241 Hex Titanium Step Cone Drill Bit Hole Cutter For Sheet Metal [ Life Time Warranty ] iNculded Free Cleaning Cloth

ACENIX High Speed Step Dril Bit 4-22MM HSS 4241 Hex Titanium Step Cone Drill Bit Hole Cutter For Sheet Metal [ Life Time Warranty ] iNculded Free Cleaning ClothEBUYER GATE LTD