The manufacturer does write "floor-friendly", however, these are plastic and not rubber, so I would recommend a protection mat. You can find some here (not all of them are for chairs though): https://www.galaxus.ch/en/s14/producttype/protective-mats-1168?tagIds=99-939

Gemäss bereits gestellter frage -> https://www.galaxus.ch/de/s12/questionandanswer/are-the-wheels-suitable-for-wooden-floors-scratch-the-ground-361713?productTypeId=2513&referrerProductId=13107951 Wird eine Schutzmatte empfohlen.