Caster Wheel Load Rating 7200 lb. Wheel Dia 8 In. Wheel Width 3 In. Wheel Material Polymer Wheel Color Black Core Material Polymer Hub Length 3-1/2 In. Fits Axle 3/4 In. Spanner Bushing Not Included Core Color Black Precision Ball Wheel Bearings Temp Range -30 Degrees to 220 Degrees F Durometer 80 Shore D Resistant To Water Oil Chemicals Most Acids Bore Dia 3/4 In.