Works like a charm. The old fitting on my Black and Decker has survived. You can put a valve on a car tire, but on bike tires the fitting is simply deflated before the tires reach full pressure. So I was looking for a new compressor and wasn't thrilled with the choice. I saw this fitting and was hoping it would fit given the 1/4" inner diameter. I cut off the old fitting and put this on, it fit perfectly and filled the Pronto tires. I saved $75 doing this