Billet aluminum Kawasaki Jet Ski electrical box fittings. Replaces the brittle and easily breakable plastic nut that threads into the stock Kawasaki electrical box. Comes with a new oring that seals the fitting to the box. Can be used with the stock plastic cap or the ADA Racing billet aluminum cap shown under related products below. Threads are 18-1.5mm on the end that goes into the electrical box and 16-1.5mm on the cap side. We make these in-house in the USA!