The Navimount RAIL mount is designed to attach the Navilights with Magnetic base, Navimount base or Suction base onto any 25 or 35 mm / 1" or 1 ¼” rail. Includes 2 SS screws and nuts. - Navilight models 001, 010, 040, 305, 340 require in addition the Navisafe converter Navimount / 960 - Navilight models 041 and 341 do not require additional converters and can be mounted directly