Erik with 4 in towwrote a review of Blackburn Air Tower 4 Pump on May 9, 2016
Familiarity: I've put it through the wringer
The pump works very well, but I have Enve mtn bike rims that have shorter presta stems, so there just isn't enough to bite with this attachment requiring the shrader converter and it works without any problems.
The only "problem" I have with this is that I cannot figure out how to open the drawer to the handle. It seems like it should just slide out, but I have used a lot of force and I'm sure it can't be that difficult. I'd love to store the shrader adapters, ball needles, stem valves, valve tool, etc. in there, but I can't get it open! That's why the 4 stars...
UPDATE: I suppose I should've just Googled it from the beginning, but apparently the pump I received does NOT have drawers in the handle! The picture BC shows is the pump I received and the picture attached is from Google images. No drawers!