If you're using your XS Power battery to start your car, you'll need a set of battery posts. These PN 586 brass posts are for vehicles that use "tall style" battery posts. They feature M6 threads and come with stainless steel hex-head bolts that are built to last. These posts work with most XS Power 12-volt deep-cycle batteries, and you can also use them with XS Power's exclusive i-BAR battery fit system. Warranty: 1 year.