1/2″ Aircraft Extension Drill Bit – 12″ OAL – HSS – 135° Split Point – NAS Type B – DBAC12-1/2

The DBAC12-1/2 aircraft extension drill bit is engineered for applications requiring extra length and precision. With a 1/2″ cutting diameter and 12″ overall length, it features a jobber-length flute and a 135° split point for fast starts and reduced thrust. Built from high-speed steel with a black oxide finish, this bit is optimized for extended use in hard-to-reach areas. Ideal for aerospace, fabrication, and general industrial use.