The round wire springs supplied by Wolff springs are FOR the CZ. The wire diameter, number of coils and total spring length are all factors in the spring weight results.
When the spring is in the pistol, it's compressed. When the slide retracts, it's compressed MORE and reaches the actual spring weight.
Flat Wire Springs made for Glocks may or may not be okay for CZs.
I don't doubt there are differences between CZ and Glock spring specs..
Spring weight can be measured. (see the Wolff --gunsprings.com--info area about measuring their spring weights.)
Put the spring on a post. Compress it with weight to until the spring is the length when it's in the pistol. Now add weight until its the length compressed when the slide is fully retracted. This should be the actual spring weight in THAT gun tested. IF it fits, Test it in a Glock and it'll be one weight. Test it in a CZ and it'll be another weight---SAME SPRING different compressions.