Grizzly T23279 Zero Clearance Insert Easy way to ensure tear-out free cuts. Made out of durable phenolic material. This versatile buffing system is equally at home in a cabinet shop or on a knife maker Inch or gunsmith-Inch bench and is available in either 3450 rap Motor is heavy-duty tic 1 hip 110v Large 1-Inch diameter shafts extend 8-Inch on either side and have a 5/8-Inch threaded arbor on the ends