The set includes the following showers:

1.Essenza New KDJ
https://www.radaway.pl/kategoria/essenza-new-kdj/ 

2.Arta DWD + 2S
https://www.radaway.pl/kategoria/arta-dwd2s/ 

3.Idea Black DWD
https://www.radaway.pl/kategoria/idea-black-dwd/ 

4.Modo X Black I Factory
https://www.radaway.pl/kategoria/modo-x-black-i-factory/ 

Also included is the Grohe technique:

Enjoy your use!