Mastercool 89661-PRO Automotive R134a 2-Way Manifold Gauge Set with 3-in-1 Can Tap Valve – U.S. Designed, Assembled, and Tested – Includes 60" Hoses and Manual Couplers

I’ve been using this same brand for decades. It had never let me down. I use the on a harsh environment as heavy construction equipment tech in the field service department. I had never found a set of valve that supported the use, sometimes abuse we submit this tool. I only have had to replace a couple of seals from time to time due to excessive use on somewhat corroded ports.

I have been wanting a set of gauges just for automtive uselI was just about bought a Harbor Frieght set and call it good. I'm glad I went for the upgrade! The gauges, manifold bar, and hand valves seem to be well made and reliable. It has "dummy plugs" on the side to hang the blue and red hose from when not in use but, not the yellow! all the ports on the manifold are the standard 1/2" ACME fittings. All the hoses are ACME on one end. The yellow is ACME on both ends. The red and blue hose have 1/4" male pipe thread with an O-ring. These are for attaching to the quick connect fittings that are included. The middle port on the manifold has a T with another ACME fitting with a schrader in it. You can use this to attach a vacuum gauge or purge non-condensable from the hoses before charging. All-in-all a great, complete kit!

Even though not leaks so far at the fittings but they look really cheap, was expecting better for being mastercool brand

Manifold is exactly what I expected; however, the provided hoses do not work with the manifold without an adapter. Called Mastercool at the phone number on their website and told them my issue. They said there was a slip up with a few sets but they are sending me the correct fittings for free. Great product and even better customer service.

This is a really nice AC gauge set. If your like me and stuck in the forbidden territory (aka California) for car guys you need the can punch (green pliers looking thing) to fill to AC. The stupid California R134a can adapters suck and always leak.

VERY GOOD GAUGE I JUST GOT THIS WEEK AND I ALREADY WORK 10 CARS I WISH I COULD GIVE 1O STARSTHANKS MASTERCOOL.

I initially got these to replace a HF set that i used twice and then the high side coupling leaked like a sieve, the first set of Mastercool gauges i purchased were defective, the needle on the high side gauge looked like a dogs back leg and as a result couldn't be read with any degree of accuracy, i returned them and Amazon expeditiously shipped me a replacement which i received on Sunday and i used them today(Friday ) the set seems well built i like that they fit great just finger tight and don't leak, hopefully the seals will hold up and i will be able to use this set many times, i like the case, i think the gauges will fit back in still attached to the hoses with a bit of wrestling, overall nice item.

These are good, accurate gauges with nice manual valve couplers. I prefer manual valve couplers to the quick-connect kind that are pressurized as soon as they are pushed on.