I was give a pallet of auger bits that I want to sell but don't know what they were designed for, so not sure who might be interested in them. I have twelve of them, each is 4' long x 14" in diameter with a 1 1/2" round shaft. They have been sitting outside and are rusty but I don't see any thinning of the metal or other problems. If anyone can tell me something about them and what they might be worth I would appreciate the info. thanks.