Products BaseOther Base Back Antenna Rail Mount 156-0033Y-00 Item Number: 156-0033Y-00 Thread: 1" (25.4 mm) Weight.(g): 560 You May Also Be Interested In 90° Base 956-09996-00 Rail Base 156-66320-00 Square Mount Rod Holder, Nylon 556-15512-00 45° Rectangular Base 156-66115-00