Barnacle Busters50686 Swirl-Off Nut For Barnacle BustersSKU: 50686 The 50686 Swirl-Off nut is used for all 6″ barnacle busters. Add to quote Related products Barnacle Busters50685 Swirl-Off Barnacle Buster Inner Retaining Cup View product Barnacle Busters50683 Swirl-Off Spacers (Set of 42) View product Barnacle Busters50684 Swirl-Off Axles (Set of 7) View product