Are lightweight with braided cover. The easily repaired umbilical cable includes one kink-free, wire reinforced sample line, 3 kink-resistant polyethylene lines (2 pitot & 1 orsat line), 6 type K thermocouple extensions, and five conductor electrical cable with 4-pin circular connectors. Thermocouple plugs are colored coded. The sample line has 1/2 inch quick connect and the pitot lines have 1/4 inch quick connects standard (3/8 inch optional). Standard lengths are 30, 60 and 90 feet. U-bag included.