I actually bought a 2" Vintage bit off of E-bay that has a square end. I may try to cut it off and use it in my drill. It has large gaps between the augers unlike the ship auger bits of today. My concern is that mine only has a single cutting edge which I see many old Beam drills have. I see that some of the older 2" bits have 2 cutting edges. It seems like they may stay more true and not wander. I guess I should look for an old beam drill...