The MASTER 12 Volt Pump produces double the PSI as other 12-volt pumps and you do not need to clip it to a battery terminal! Great for getting towables, inflatable boats/kayaks, pool floats and air mattress fully inflated. With a max PSI of 2.3, this pump is the first one on the market that gives you the ease of plugging into any standard auto/boat 12-volt outlet and the volume to get the job done fast. The 4 different adapters will allow you to inflate most any item and the 10’ power cord lets you inflate your item where you need it.