Works very well. I've been thinking about what to use to deflate tires for a while and have done a lot of research. I am the god that I walked this path. The currie version is made by the same people. I compared my ARB to my friend's Currie and everything matches, right down to the crimp pattern on the hose. When I bought this one it was a few dollars cheaper. I read some reviews saying they are made in Australia. That is not right. ARB is an Australian company but it's a 'stenciled' product (manufactured by a third party and factory branded for the customer) and the leaflet says it was assembled in the US with foreign parts I assume. China or Taiwan (just guessing). The build quality is excellent, the sensor is accurate. Some write in the reviews that it is very slow. You don't read the instructions completely and you make a mistake. (I used to do this too. Always PRACTICE with stuff like this at home so you don't look like a jerk on the trail!) A stem puller will unscrew the stem and not remove it completely unless you know exactly what it is. as if. If it's slow, then you haven't completely gutted the stem. Period. That's the *only* problem with them. The design does not allow other mistakes - that's it. You have to do this several times at home until you get it right. Once you do this it will work every time. Also, over the years, my rims have been fitted with tires in different workshops and the valve stems have mismatched. One of them doesn't really like this tool and needs a little extra attention from me, so I would recommend that you practice this on several, maybe different cars, rather than on one tyre, as the bars are slightly different. (My ARB inflator has a stem problem on the same tire. I'll have to replace them all when I get new tires.) Highly recommend!