The Triton 08519 Spare Tire Carrier Kit is an excellent space saver for the tongue of your Triton trailer. Product Features: This aluminum welded accessory is designed to be mounted with the Triton 13501 Swivel Wheel Tongue Jack 1,000 lb Bolt-on Jack to save space on the tongue. It can also be installed easily on the A-frame part of a larger trailers tongue. Holds wheels with a 5 on a 4.5" bolt pattern with a center hole larger then 2-5/8" Mounting plate dimensions: 7" x 6-1/2" Distance from bottom bolt hole to first bolt hole (in a series of 4): 5-1/2" center to center Distance between sequence of 4 holes: 1" center to center Note: If you wish to mount the Triton 08519 Spare Tire Carrier on the trailer tongue by itself (not opposite a tongue jack) you will need the Triton 12562 Jack Hardware Kit.