NEW GRIZZLY/SHOP FOX TABLE SAW ZERO CLEARANCE INSERT by Peachtree Woodworking PW945 The insert is blank so you can custom fit the blade slot by passing your blade through it. Helps to prevent tear-out plus close the large factory gap. Grizzly-G1023-SL & G1023-SLX - Shop Fox W1677 & W 1711 13 5/16" x 3 11/16" - Made of UHMW