Four-position tool post for the mini lathe. This is the tool holder that comes on the mini lathe. On most mini lathes it is the correct size for 5/16" tools. On "early" Homier and Cummins lathes it is the correct size for 3/8" tools. The tool holder is 2" square and 1.5" tall. The tool slot is 0.64" tall and is 0.32" from the bottom.