Besly Screw Machine Aircraft Drill, Type C Twist Drills

These drills are made to the A.I.A. NAS-907 Type C Standards for Aircraft Drills. They are designed for portable power tools or machines for drilling holes in hard and tough sheet metal alloys of the heat resistant, stainless and titanium types. Of sturdy construction, their split point allows ease of penetration and has made them popular in automobile body work and in the construction industry.