Robinair TIF555 Leak Detector Replacement Tips - 3 Pack Robinair Leak Detector replacement tips Kit includes 3 tips and 3 protectors Designed for use on Robinair TIF5550/A, TIF5650/A, TIF5750/A, and H10A detectors Tips feature aggressive knurling for easy finger tightening Rugged plated brass construction with non-marking protectors