The Integrated Speed® Mount is similar to the Speed® Mount except it has an Integrated Mount that can hold a break over bar and aluminum axle. Locking the axle, break over bar and Speed® Dolly is all done with the built in Vice Action Lock. There is a reason this is a top seller, its ease of use keeping the dolly frame, axle and break over bar in one spot. Made from steel with our Tuff Coat Finish you will get years of dependable service. Sold as each.MADE IN THE USA.