For a few years they offered a #3 bit. A complete graduated set of 14 bits. All marked Russell Jennings. All are bright, clean and sharp. Sizes 3 through 16 which correspond to 3/16 inch to 1 inch. The bits were patented in 1855. The three-tiered box was patented in 1890. They were bought out by Stanley in 1944. The best user auger bits ever made!