Coleman Cable 553056607 Thermostat Wire, CL2 Solid Bare Copper, 18/5, 250-Foot 250-Feet spool of wire Thermostat Wire, CL2 Solid Bare Copper, AWG size: 18/5 Smooth jacket eliminates snagging and tearing Some applications: thermostats, air-conditioning controls Pvc jacket, polypropylene insulation ensures excellent strip ability