[4" DIA] X [1-1/4" WIDE] PLATE MOUNT CASTER NO BRAKE;(3/8 AXLE),(1/2" BORE),(1-1/2" HUB WIDTH);TREADE TYPE-FLAT, DELRIN BEARING, 275 LBS;(PLATE SIZE 2-3/8" X 3-5/8" AND 1-3/4" X 3" HOLE CENTERS);(LOAD HEIGHT - 5") (RUBBER WHEEL ONLY # 28-1310;US RANGE PS, PX, P11