V-Groove Track Wheel, 900 lb Load Rating, 300 to 999 lb, 5 in Wheel Dia., 2 in Wheel Width, Iron Wheel/Tread Material, Extra Hard Wheel/Tread Hardness Rating, 145 BHN Wheel/Tread Hardness, Roller Wheel Bearing Type, V-Groove Tread Shape, For Axle Size...