CASTOR - Part #: 881029
CASTOR KIT 2-1/2" PLATFRM ST/4 INCLUDES: 2)830273 CASTOR W/O BRAKE& 2)830274 CASTORS W/BRAKE, 16)830536 SCREWS, 16)830613 LOCK WASHERS, & 8)868341 SHIMS, 943328 INSTRUCTIONS. RAISES CABINET APPROXIMATELY 3-3/8". SCREW HOLES IN CASTORS ARE 3" ON THE 4" SIDE AND 4" ON THE 5 1/8" SIDE