Let me be the first to NOT recommend a lezyne. I have an alloy floor drive because I wanted something classier than my Specialized pump (which although looks like a product of the 80s, I've never had a problem with). It's like a Ferrari. It's beautiful, but it's a pain in the rear. The pump head adapter is a screw on, and a real pain to use. Takes probably 1-2 minutes and 2 attempts to get on versus about 3 seconds. I also can't use it on the "crack-pipe" style valve extenders (like Zipp, Mavic, etc.). There is a black plastic press-on head, but that thing sucks too and is impossible to use. My pump head is currently broken after about 2 months, and I need to find a special size star driver to attempt to fix it (if I even CAN). Save your money and don't be seduced by the good looks like I did. I'm sure the lezyne fanbois are going to rip this post up.