Island Hopper PSI 15 Auto-Set Pump Pump for Drop Stitch Inflation 15 PSI Auto Set power inflator by Island Hopper is designed to quickly inflate any drop stitch inflatable product to a pre-set PSI. Simply attach the hose into your Halkey Roberts valve, set a PSI pressure and walk away. This portable unit includes an extended DC 12 volt power cord that allows the user to plug into a cigarette lighter or clip to the terminals of your car or boat battery. Product will work with any brand water platform or drop stitch product. Ships and sold separately