Over the last several years, there were two things that I liked about the new pups that Saia had bought. One was the grease in the hubs instead of oil, and the other was valves in the air lines so that we didn't have to use glad hands to close off the airlines. Last night, I hooked a brand new pup, 289 something, and I couldn't believe that it was factory fitted to use glad hands to cut off the airlines. It still had it's original set but for how long, probably not very.