UnfilteredDregswrote a review of Birzman Maha Apogee IV Floor Pump on January 16, 2016
Familiarity: I've put it through the wringer
The interface, chuck, whatever you want to call it does not seat and lock easily onto the valve stem. I'm using Presta with valve extenders. It just plain up sucks, pops off inconveniently, etc..
Once you finally get the thing to lock up right...the pump certainly pumps. Seems well made but the chuck just sucks.
I'm returning and purchasing something else...