Delta Rockwell 10" table saw motor shaft extension with sliding pulley.  Nice shape as shown.  This was used on the 10" table saw / 6" jointer combo model which shared a single motor.  The pulley slides on the shaft to either power the saw or the jointer.  The ID of the shaft is 3/4" and it is 6 3/8" in length with a 3 1/2" OD pulley.  U.S. shipping only.  Thanks.