XtremepowerUS Premium 4CFM Air Vacuum Pump HVAC A/C Refrigeration Kit
A Powerful Compressor, 3 Hp 4 Cfm 1 Stagerotary Air Compressor, 1 Stage Rotary Air Intake, Air Compressor Kit Ac Heating And Cooling Systems, Leak Detection, Xtra Quiet Compressor, Air Flow Control
Results of our analysis:
We analyzed 9,350 reviews for 46 products in the Air Conditioning Leak Detection Tools category.
We then analyzed 36 reviews for this product. Of these, 6 reviews were recent.
100% of reviews were positive.
Final Score:

7.90 out of 10, based on these factors:
Common Questions
I don't know how to measure pressure or even how to use it.
The set is rated 4.5 stars, with some reviewers giving details of good quality, but how to use them can be found by doing your homework on the internet, comparing sources of information to see what makes sense, and making you own instruction notes.
The description says it is possible to use it for r134a, but the gauge does not show it.
Yes, there is a tempeture reading for r134.
Is it effective?
I am not happy with the longevity of the knobs after a couple of years of use, and I need a screwdriver to turn the screw that secures it to the valve to turn open and close the valve sometimes.
Is there a PDF of the manual?
I'm not sure I understand the question.
Is it possible to hook an oil injection into the system?
It depends on the type of oil/dye injector and the service port has non standard threads.