GENERAL P16183SR-M Semi-Rigid Probe, 5.5mm Dia., 9.8 ft. L. More details: Semi-Rigid Probe, Features Flexible and Obedient, 5.5mm Dia., 9.8 ft. Length, , For Use With Mfr. Model No. DCS1600, DCS1600ART, DCS1700, DCS1800 , Manufacturers Warranty Length 3 Year Limited