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Semi Trailer Air Brake Testing Tool

  • Glad hand coupler for quick connection
  • Cushioned grip
  • Ball valve shut off

  • Semi trailer air brake testing tool has a glad hand coupler for quick connection of air lines. Connect air lines to the service and emergency brake lines of the semitrailer in order to test brakes when separated from truck/trailer. Comes with a cushioned grip for comfort and a ball valve shut off.