Perfect-Prime TL0005, Pipe Clamp Temperature Flat Lead for K-Type Probe Thermocouple Sensor in Temperature Range From -40~200&deg;C/393&deg;F Operating temperature: -40C to 200C / 392F Clips On Pipe To Measure Temperature - Dimensions: 5.12-Inch H x 3.15-Inch W x 1.02-Inch D Clamp Jaw Opening: 1 3/8-Inch (6.5 cm) , Length of Cord: 40-Inch (102 cm) Clips On Pipe To Measure Temperature BE CAREFUL to USE FOR HVAC LIQUID LINE. THE LEADS WILL SLIP OFF THE LINE, and INCORRECT READINGS WILL RESULT.