FINE QUALITY VINTAGE TOOLS FOR SALE FOR THE COLLECTOR, WOODWORKER, AND ARTISAN. WE ALSO BUY - VINTAGE TOOLS AND 'MODERN' TOOLS BY LIE-NIELSEN, VERITAS, BRIDGE CITY & MORE
Unique in my experience. The handles unscrew from each other to loosen and insert the bit. There is also a cammed collar that also appears to help position and lock the bit. About 13 1/2" long. No markings or maker's stamp that I can see.