Meters -5 Pieces 63mm Clip-on Pipe Thermometer with Thermometer Highlights Generic 5 Pieces 63mm Clip-on Pipe Thermometer with Thermometer 63mm diameter, 0-120 aluminum housing with spring for connecting to aux pipes in 20-50mm. 63 mm diameter thermometer with spring for attachment to pipes. (you can connect to smaller or larger pipes by using spring or different wire length) Fitment: suitable for hot water, HVAC. Heating, oil tanks, etc. Specification: Condition: New Model Number: 550118 Housing Material: Aluminum Size: Outer Diameter: approx. 63mm height: approx. 10.2mm / 0.40 inch Range: 0-120 Package includes: 5pcs Clamp Pipe Thermometer Note: 1.We provide clear pictures, measurements where possible. Please check as much as possible to make sure the item is the one you need. 2. Please allow 0.5-1 inch difference due to manual measurement. (1inch=2.54cm) 3.There are no instructions included in this kit. Professional installation is highly recommended