This PV Stem Saver fits over Presta tube valves so that they seat nicely in rims drilled for Schraeder valves. It works perfectly for using our Schwalbe Presta Tubes with the BOB Trailer Wheel. It also works great for using Presta valve tubes on any of our other bike cargo trailers, all of which come drilled for Schraeder valves. Get a set to use on any bicycle wheels drilled for Schraeder that you would like to have a snug fit for your Presta valves.
Sold as pair