Extreme Max Hardware Kit For High Mount Spare Tire Carrier 0064 4" 4in. 4130 Hardware Kit provides replacement U-Bolts and the hardware needed to secure the High-Mount Spare Carrier (Extreme Max part number 3001.0064) to your trailer frame. Fits trailer frames up to 4" Height x 3" Width. Features of Extreme Max Hardware Kit For High Mount Spare Tire Carrier 3001.0064 4" Use with Extreme Max High-Mount Spare Tire Carrier part number 3001.0064 Fits trailer frames up to 4" Height x 3" Width Includes two U-Bolts four nuts and three lug nuts Package Contents: Extreme Max Hardware Kit For High Mount Spare Tire Carrier 3001.0064 4" Extreme Max 3001.413: Hardware Kit For High Mount Spare Tire Carrier 3001.0064 4" 4in