try the Fieldpiece DR82 Infrared Refrigerant Leak Detector
Hands free in-duct measurements
Refrigeration Technologies RT201BP Viper Nylog Blue - Gasket & Thread Sealant
With the freedom to work the way you want to
SPYDER 600052CF 6″ Tungsten Carbide Tipped Hole Saw (RCE HOLE SAW, TCT, 6", Crimp Foil) 54075 try the Fieldpiece DR82 InfraredSPYDER 600052CF 6 Tungsten Carbide Tipped Hole Saw (RCE HOLE SAW, TCT, 6", Crimp Foil) Extreme Material Versatility and Faster Cuts. Up to 10x more cuts than bi metal hole saws. Up to 5x faster than standard hole saws. Tungsten Carbide Tipped for extended life and clean cuts. Cuts wood, concrete block, brick, cement fiberboard, ceramic wall tile, PVC, and more, (with a Mohs hardness of less than 6). Up to 2 3 8 Depth of Cut. Utilizes Rapid Core Eject