... , aviation fuel, antifreeze, motor oil, gear oil and kerosene proof insertion tube Image CMOS video camera chip allows live detailed inspections ... Shaft/Tip: 5.5 mm or 4mm, vinyl coated flexible insertion probe Working length: 1M, OPTIONAL 2M, 3M, 5M Probe diameter ... or 4mm Optical system: 1/10" CMOS video camera Waterproof: insertion tube only