Caster Wheel,6000 lb.,6 dia.,3 W
, 3 in Wheel Width, Steel Wheel/Tread Material, Extra Hard Wheel/Tread Hardness Rating, 179 BHN Wheel/Tread Hardness, Roller Wheel Bearing Type, V-Groove Tread Shape, For Axle Size 1 in, 1 3/8 in Groove Width, Included Includes Spanner Bushing, Steel Wheel Core Material, Yes Non-Marking, 3 1/4 in Hub Length.V-Groove Track Wheel, 4500 lb Load Rating, 3000 to 5999 lb, 6 in Wheel Dia.