THREADED STEM CASTER, SWIVEL CASTER, 300 LB LOAD RATING, 300 TO 999 LB, 5 IN WHEEL DIA., 1 1/4 IN WHEEL WIDTH, POLYURETHANE WHEEL/TREAD MATERIAL, 6 IN MOUNTING HEIGHT, DELRIN, 1/2 IN.-13 X 1-1/2 IN CASTER STEM SIZE, THREADED, STEEL CASTER FRAME MATERIAL, ZINC PLATED FRAME FINISH, YES NON-MARKING, 1 NUMBER OF WHEELS