Currently Available Auger Bits (Regular Style) $1 each unless noted otherwise.

Size 4: Made in USA // Irwin D-24 // Irwin Mainbor // Unmarked (2) // PEXTO

Size 6: Irwin Mainbor. (Wings getting low, 0.50) // Irwin - USA (3) // Greenlee

Size 8: Master (wings getting low, 0.50) // Irwin - USA (Wings, 0.50)

Size 10: unmarked (pitted shank, usable 0.25) // Irwin - USA

Size 12 Craftsman // Irwin Mainbor 




There are half a million different Irwin logos. Irwin - USA is one of the newest ones that is written on a slight slant. The Irwin - Mainbor have the "Reg US Patent Office" thing in the box, with MAINBOR below it.