Easy of Use: With its magnetic flange, the probe securely adheres to metal surfaces, allowing for hands-free operation. This not only frees up your hands but also ensures consistent and reliable measurements. Suitable for Dual-Port HVAC Digital Manometer Gas Pressure Tester Differential Pressure Gauge HVAC Gas Pressure Tester TF100 T fitting with 3 different sized barbs, allowing you to use 1/16 in., 1/8 in., or 1/4 in. pressure tubing with a single adapter. This fitting is compatible with the following products Each of your differential Manometer should be equipped with a set of these kits to enhance work efficiency. This JL3MN Manometer Probe Kit is compatible with a range of Manometer models: compatible with:Fieldpiece JL3KM2 , SDMN5, SDMN6, ADMN2,compatible with Klein Tools ET180,compatible with:UEI EM152, EM151, EM201B, EM201Scompatible with:Extech HD350 Testo 510, 0560 1510 510I