VLYNX VCP8 1 Pair of 8mm Stainless Steel Charging posts for batteries with 8mm screw in terminals 8mm Stainless Steel Battery Charge Terminal Posts 1 Pair + and -'Ve TOP OF BOTH POSTS UNSCREW TO ACCOMMODATE A RING TERMINAL FOR MARINE OR AUXILIARY HOOK UPS Charging post are used with any battery compatible with 8mm screw in terminals.