Dormer A002 HSS Jobber Drill Bits 1.6mm (Box Of 10) The Dormer A0021.6-10 is a Box of 10 Jobber length drills with straight shanks. They have a diameter of 1.6mm with an overall length of 43mm and flute length of 20mm according to DIN 338 standard with 118 conical point, HSS with bright finish for 4xD drilling without pecking in steel. Features: Bright (uncoated) High Speed Steel Tool Material DIN 338 Straight Shank Drill Standards 4D Usable Tool Depth to Diameter Ratio Drill Point 118 Cylindrical Shank / Straight Shank Standard Spiral Flute Design Right Hand Rotation / Cutting h8 Industry Standard Tool Tolerance Zone (based on diameter range) Specification: Gross weight: 0.54grams Cutting diameter - millimeter (DC): 1.6 mm Cutting diameter - inch (DC): 0.063 inch Length chip flute (LCF): 20 mm Overall length: 43 mm Connection diameter (DCON MS); 1.6 mm Length chip flute (LCF): 0.7874 inch