V-Groove Track Wheel, 1000 lb Load Rating, 1000 to 2999 lb, 6 in Wheel Dia., 2 in Wheel Width, Iron Wheel/Tread Material, Extra Hard Wheel/Tread Hardness Rating, 180-220 BHN Wheel/Tread Hardness, Roller Wheel Bearing Type, V-Groove Tread Shape, For Axle Size 3/4 in, Not Included Includes Spanner Bushing, Plastic Wheel Core Material, Yes Non-Marking, 2 1/4 in Hub Length