Kawasaki Jetski Jet Ski Ultra STX STS SS XI SC ZXI Flush Kit 1/2 A2506 Fits All Kawasaki Jet Ski with a 1/2 in water line. Come with hose clamps. Easy to install. Allows you to run your machine on a garden hose and flush out any harmful deposits left in your cooling system water. High quality made in the USA.