Krea Swiss is the same familiar brand/manufacturer you’ve known as Krebs. Only the name has changed. The company has not, and neither have its products. They are made by the same people, in the same country, and under the same quality controls.
The atomizer insert or "swirl piece" converts the material flow into a spray pattern in Krea Swiss food sprayers multiSPRAY (LM25) and volumeSPRAY (LM45).It is recommended to have spares of this part, since it can get lost during cleaning.