Rubber Tread on Aluminum Core Wheel 595 lb Load Rating 300 to 999 lb Load Rating Range 4 15/16 in Wheel Dia 2 in Wheel Width Rubber Wheel/Tread Material Soft 65 Shore A Precision Ball Standard Tread Shape 1/2 in For Axle Size Not Included Includes Spanner Bushing Aluminum Wheel Core Material No Non-Marking 2 11/32 in Hub Length