There are good heavy constructions out there and they work great. I've used several of these and haven't had any problems. I'm happy with their quality.
Enhanced Elitech ILD-300 Infrared Refrigerant Leak Detector: Advanced HVAC Halogen Tester with Selectable Gas Functionality
9 Review
Lichamp Automotive R1234YF Installer Standard
9 Review
💨 Robinair (15115) VacuMaster Single Stage Vacuum Pump - For Efficient Single-Stage Vacuuming, Delivers 1.5 CFM
9 Review
🌬️ UView Airlift Cooling Checker 550000
9 Review