Description Mod Mafia Roof Rack Lockable Tire Carrier was designed to mount directly to low profile roof racks.  Made from 1/4” steel, it is more than strong enough to hold down our 42” spares.  The rod has ACME threads to handle the abuse of off-roading.  Works with almost any wheel offset. It comes with a padlock to keep it secure not only from theft, but vibration!  Had a friend a while ago who lost his spare down a mountain because of vibration. This is a Moab tested product.