JINKEYJINKEY Lock On Air Chuck for Schrader Valve, Heavy Duty Brass Close Flow Straight Locking Air Chuck Quick Connect 1/4" FNPT Tire Chuck for Pressure Gauge Tire Inflator Compressor Accessories

This product works as well as the fancy one, but much cheaper, A life saver for filling large tires have filled 16 tires and no leaks and easy and quick to remove

I'm afraid this Air Chuck is no good for high pressure (200 PSI +) tyres. Doesn't grip the valve stem sufficiently.

I like the convenience of this design for filling tires, easy to slide and lock on, no trouble while filling, and even easier to remove when done, minimizes air leakage during removal, which can be a real problem with some other designs.

I use this as part of a remote tire filler, it locks on tight and makes a great seal. The only downfall is that your valve stem has to have a core in it, and it fills tire slowly.

This air chuck is either NOT closed-flow or was defective. I connected the Jinkey Air Chuck to a device that pumps up two car tires at one time, separate air hoses and chucks for each tire. I connected the non-Jinkey air chuck to a tire, and air began leaking out of the Jinkey chuck immediately. The Jinkey air chuck has a spring-loaded rod in the center (implying that is has an air shut-off valve built in), but it did not stop the flow of air.Too bad this did not work as advertised. The build quality was pretty good and design also seemed to be pretty good (other than the air shut-off part). I would like to return it and get another to see if I just got a defective item, but cannot find a way to contact the manufacturer. I could order a replacement Jinkey chuck from Amazon but it would just be a crap-shoot and I am not a gamblin' man. I will try a different brand.