Allows for set up and dedication of a small drill press for tube notching. Adjustable for out-of-square tables, the RTN-Base also makes it easy to lay the notcher over horizontally while still bolted to the table to handle long or cumbersome tubing that can't be notched in a vertical position. Minimum requirements: 1/3HP drill press with 3-1/2in. to 4in. of travel and 14in. from the table or base to the chuck. Bolts for attachment included. For use with our Item# 152391. U.S.A.