Aircraft Extension Drills (Letter Sizes) Are Designed For General Purpose Drilling In Normal Steels, Cast Iron, And A Variety Of Other Ferrous And Non-Ferrous Metals And Alloys.
Aircraft Extension Drills (Letter Sizes) are made of sturdy high speed steel for long lasting durability and strength. They feature a normal spiral with helical flutes for accurate drilling. The black oxide finish helps prevent wear and tear. Choose from USA Made or Import models. Comes in letter sizes A through Z. Dimensions and flute lengths vary.