In practice, unfortunately, several problems have been quick to give:
* When you first unpack it occurred to me disgusting greasy film on the two cylinder housings on - the same hands
smeared.
* Rubber Cap on pedal jumped at the 2nd time (and regularly thereafter) abruptly away and flew into the pump
Corner.
* The metal cover of a cylinder pulled away repeatedly and wedged to the linkage; then one has
again a wonderful film of grease on the floor.
* Disconnecting the mounting cup with my bike (normal car valve) is so heavy that the previously pumped
Air flow has escaped again. Approximately 40x pumps each time was for nothing.
The only positive: large easy to read gauges, different valve essays included here.
Conclusion: To me it is a mystery how could be "Test Winner" this product - I will again put myself in search and look for another (electric?) Pump out.