Check the listing for details. Non Motor Driven Grinder Sensitive Workhead CAT 50 Taper. Condition: Used. Listed at 321.74 USD. Size: Length: 18 in. Width: 18 in. Height: 18 in. Unless otherwise specifically agreed to in writing by. No clue on what this goes on, similar to K.O.Lee, do not have any model number. Need it urgently?.