Hamilton S-Wh-4Db Plate Caster, Swivel, Poly, 4 In, 750 Lb
4 in, Wheel Width 2 in, Wheel/Tread Material Polyurethane, Wheel Core Material Cast Iron, Non-Marking Yes, Number of Wheels 1, Caster Brake Type No Brake Included, Tread Shape Standard. Zoro Select 1Xa55 Heavy Hex Nut, 2-8, Steel, Grade 2H, Black Oxide, 2-1/32 In.