V-Groove Track Wheel 900 lb Load Rating 300 to 999 lb 6 in Wheel Dia 2 1/2 in Wheel Width Iron Wheel/Tread Material Extra Hard Wheel/Tread Hardness Rating Roller Wheel Bearing Type V-Groove Tread Shape For Axle Size 3/4 in Not Included Includes Spanner Bushing Iron Wheel Core Material Yes Non-Marking 3 in Hub Length