XS Power 589 5/16" (2) Stud Adaptors With Wing Nuts

The 589 is a pair of 5/16" stud adapters with wing nuts, giving you two threaded studs for battery cable connections. The 5/16" size fits the ring terminals commonly crimped on charging leads, accessory wiring, distribution block feeds, and mid-gauge power cable, so cable ends you already have land correctly without modification. Wing nuts are the useful part. They thread on and off by hand, so disconnecting a battery for charging, winter storage, or transport takes seconds and no tools. That matters in a competition vehicle that gets torn down between events, a boat where batteries come out seasonally, and a show car that gets disconnected between weekends. Two studs in the set means you can do both the positive and negative terminal in one purchase, keeping the hardware consistent across the battery. Also handy any time a battery arrives with a terminal style your cables were not built for, since the adapters convert the connection instead of forcing you to recrimp.