I use this product to inflate car tires and also tubeless tires for my gravel bike tires. It works right out of the box with minimal assembly. The kit includes rubber O-rings (and spares) for good air. Seal. This kit includes "Schrader" and "Presta" valve islands and fits my needs well. Because I inflate my bike tires in the garage, I find it handy to have a backlit display, a blind, before every ride. The only thing that can perhaps be improved is the pressure reading when inflating: this number on the display when inflating air does not correspond to reality. Inflation must be paused to get accurate readings. never mind