RV Trailer Camper Lp Gas Fortress Propane Gas Lock 1/2 TORK LIFT A7702 Propane Tank Lock; Fortress; Use With RV or Camper Mounted Tanks; Key Lock; 1/2 Inch Threaded Rods; Single; Will Lock 2 Tanks Allows Tanks To Be Securely Locked When Mounted To Trailers, Towables And RVs. Affordable Investment High Impact Aircraft Grade Aluminum Includes GasLock Assembly, Lock With 2 Keys, Theft Deterrent Sticker No Tools, No Modifications, Installs In Seconds