Caster Wheel, Metal V Groove, Wheel Dia 5 In, Wheel Width 2 In, Load Rating 900 Lb, Hub Width 2 3/16 In, Core Color Black, Tread Color Black, Roller Wheel Bearings, Fits Axle 1/2 In, Wheel Material Cast Iron, Temp Range -20 to 500 deg F, Resistant To Impact, Hard Tread, Replacement For 1NWC4,1NWC5,1NWD7, and 1NWD8