Here pics of my no-name telescopic "Black Mamba" from China
- it can do to approx 8 atm ( but it is workout, and you have to be careful not to snap the valve ):
Tape around top tube below handle when folded prevents it to impersonate Rattlesnake
It has a lever that really does seal around the valve well
It does presta and schroeder valves by unscrewing this nut and reversing the position of the rubber seal. Not exactly convinient to change, but it does seal much better than other systems.
The only alphanumerical "whatever" found.
Cheap, cheerful and faithful companion on the road. I will really miss it if and when it goes RIP.