They came with everything I could ever need or need to work with R410A, R134a or R22. I have military training in AC and R, and when it comes to Uncle Sam's gear, don't mix gases and sensors, so this is a set for each gas. These are the ones I will be using in my home central air system. At this price I can afford to have a kit just for my home air conditioner and buy another kit for cars. They did their job but I can't vouch for the accuracy, I checked the temperatures on both sides of the system and accordingly the sensors were correct so I guess next time I won't have to do multiple checks but like everyone Measurements Devices you should always test before trusting.
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