They have a black oxide surface treatment that is abrasion resistant, reduces chip welding and improves chip flow.Sizes smaller than 1/16 and #52 have the 118 degree standard point. #16x6" HSS Aircraft Extension Drill Bit Manufactured to Aerospace Standard 907.
Great for vehicles with retractable antennas or if you are concerned about damaging any antennas. Pivoting pole allows the flag to turn into the wind, reducing wear and tear on the flag.