DIN338 HSS Twist Drill Straight Shank Jobber Drill Black Oxide Black Oxide: A black finish is achieved by steam tempering - a thermal process which .....
HSS-G Twist drill bits Tin coated DIN338 Fully ground split point high quality for metal drilling TiN coating is a very hard, gold coloured surface .....
Double ended Each drill has a double end and is ground with a standard 60 degree angle. Center and spotting drills are traditionally used to make a .....