Tie Down Engineering Side Mount Spare Tire Carrier with Tapered Spindle Heavy duty steel carrier mounts both spare hub and spare tire - Zinc plated Tapered spindle fits hubs using 1-3/8" inner and 1-1/16" outer I.D. bearings Fits all trailer frames up to 3" wide and 4" high Security holes for optional cable and lock (not included) Read product description below for more information