This master set allows you to build your own custom bushing driver, really a must have for garage and DIYs. It has every size you will ever need for most vehicles. No need to take the trouble to find a socket that close to the size of your bearings any more. With this kit at hand, you will just need to select the required sizes and then assemble your drivel tool, thus to get the job done promptly, efficiently and professionally. The plates can be used manually with a hammer / handle or with hydraulic presses.Made of special carbon steel with black oxide, the kit is designed for long life in daily workshop use. And all tools are supplied in a blow mold case for easy storage and transportation.