This is a nice clean older expansive/expandable bit in sharp ready to use condition. It's marked "PEXTO"  on the shank.  It will expand from 1 3/4"-3.00"diameter. No rust, minor staining, some wear. A nice ready to use adjustable diameter size, wood auger bit. It is sharp and ready to use, all adjustment feature in good usable shape, sharp and ready to use. The PEXTO logo is that of Peck Stow & Wilcox Co., a well known, respected tool maker in the early 1900's-1940's.