Dormer Pramet A243 #20 HSS Aircraft Drills Extra Long are high-speed steel drill bits designed for long-reach metal drilling, providing extra length to reach deep holes. The A243 family and #20 diameter specify the exact size and line, with HSS material for reliable metal cutting performance. These extra-long aircraft drills are suited for situations where access is restricted and deep-hole drilling is required in metalworking tasks.
