Over the years, I've had a series of 12V tire pumps that ranged from bad to worst. Usually bought at the local Harbor Freight, Walmart, or auto parts store, they don't come close to this one: long air hose - nearly twice the length of the others, you don't worry about it hanging from the tire filler valve. quick release connector - instead of trying to screw and unscrew difficult, leaky valve connectors, the quick release lever means you don't loose air pressure while removing. long 12V power plug wire - easily reaches the wheels from the car 12V plug. accurate easy autoshut off - the easiest to program units and pressure, it easily fills the tire while you can do other things (like dispose of car debris.) It might have trouble with inflating four truck tires, this is for consumer grade cars. But in light duty work, it worked great. Taking advantage of an Amazon sale, the $21 was more affordable than any I've bought before. Bob Wilson
