Great product-would recommend. I have a Vulcan 750 and there is very little clearance between the valve stem and the hub on the rear wheel (drum brake) and I was concerned about fitment. The inflator fits (barely!) with just a little effort.
A side note: The inflator has a hole in the bottom section to allow the CO2 cartridge (both non-threaded and threaded) to be inverted and stored in the inflator. Just use caution to protect the tip during storage to avoid premature inflatation!