Hey there! So this is one of those super handy aircraft extension drill bits that's perfect when you need to reach those awkward spots. It's made to Aerospace Standard 907, which basically means it's built tough for professional use. The coolest feature? That 135-degree split point that self-centers - no more wandering drill bits! Plus it seriously reduces thrust pressure, making your drilling way smoother.
Perfect for mild steel work where you need that extra reach. The black oxide coating isn't just for looks - it fights off abrasion, prevents chips from sticking, and just makes everything flow better. Oh, and quick note: sizes smaller than 1/16 come with the standard 118-degree point instead.
Here's the nitty-gritty: We're talking HSS surface treated aircraft extension drill bit, size 7/16 (that's .4375 decimal equivalent), with 4-1/16\ flute length and 6 inches overall. Seriously, this thing is a game-changer for anyone doing metalwork or automotive projects where regular drill bits just can't reach. The build quality is solid, and that self-centering feature? Total time-saver when precision matters most.
Free 30-day returns 
Free 30-day returns
