Easily pulls the valve stem into place, without fingers getting in the way of the valve stem hole and pull through process.  Makes the work on laced or spoked wheels easier because you don’t have the clearance to allow over-the-valve stem threaded types to pull through.  The three functions of this tool make valve stem and inner tube jobs easier and faster.  This is one of those tools that once you use it, you’ll thank yourself for getting one.  Definitely should be in everyone’s pack.