Boat Vent Vico Marine - Replacement Wing Nut 2-1 PieceReplacement Wing Nut for Boat Vent 2 - BlackFeatures of Boat Vent Vico Marine - Replacement Wing Nut 2-1 Piece REPLACEMENT PART - Replacement wing nut for the Boat Vent 2. Black. Part number: BV2 BK NUT. Keep a few on hand! | USA BASED - Vico Marine is a division of Vico Plastics located in Wisc..