Secure your spare trailer tire with the Extreme Max Spare Tire Wall Mount. Fastened to the inside of your enclosed trailer, the mount fits virtually any spare tire, holding it tight and flush to the wall. Featuring two options for length, 4 in. and 6 in., each bolt is fully threaded with the American 1/2 in. x 13 thread, eliminating the hassle of trying to work around the partially threaded metric bolts other brands offer. Another worthy addition only found through Extreme Max is a holding nut to secure the mounting bolt sturdily in place with or without a tire attached. All mounting hardware included. (Note: For metal stud mounting, additional hardware may be needed.) Mounting bracket Dimensions: 8.25" height, 2" width, 1" depth (without mounting bolt). Stud Size: 1/2-13 x 60.