First Alert is a well known name in fire extinguishers. These small ones are rated for a 10 year service life. Please check yours often and replace as needed. You hope to never need one, but you want it to be fully charged and ready if the time comes to use it. This fit the yellow extinguisher compartment / holder on my Yamaha Waverunner. I also have the exact one on my Kawasaki Jet Ski. Perfect fit and just loose enough to slide out of the PWC holder quickly if needed.