HSS Roll Forged Twist Drill Bits, Surface treated with Black Oxide.

Material: A-M42, B-M35, C-6542, D-9341, E-4341
Suitable Standard: DIN338; DIN340; DIN1897; Aircraft Extension; Jobber Length; Taper Length; Screw Machine Length
Point Angle: 118Degree, 135Degree
Surface Treatment: Black Oxide; Black Flute&White Shank; Black Flute&Gold Shank; Grey Flute&White Edge; Grey Finish; Bright Finish; Bright Finish&Tin Coated; Rainbow Color; Amber Color; Single End Body; Double End Body.