Sockets & Adapter Set for Veritas Dowel & Tenon Cutters

These four-sided square sockets come with a socket adapter. The 1/2" socket is for 3/8" and 7/16" dowel; the 5/8" socket is for 1/2" dowel. Both have a 3/8" square-drive end. The socket adapter has a 1/4" hex shank.