V-Groove Track Wheel 3000 lb Load Rating 3000 to 5999 lb 10 in Wheel Dia 3 in Wheel Width Steel Wheel/Tread Material Extra Hard Wheel/Tread Hardness Rating 188 BHN Wheel/Tread Hardness Roller Wheel Bearing Type V-Groove Tread Shape For Axle Size 1 in 1 3/8 in Groove Width Not Included Includes Spanner Bushing Steel Wheel Core Material Yes Non-Marking 3 1/4 in Hub Length