Fulton Economy Spare Tire Mount withLock - The Fulton Economy Spare Tire Mount withLock will fits over wheel studs (up to 9/16" diameter) to deter spare tire theft. The removable plug allows longer wheel studs to protrude through cap. The locking tab provides positive locking feature to prevent lock from turning. Tested toughTheft-resistant locking capMPN: ETCSTL0701