I found matching hard floor castors at Toptip (I had taken a carpet castor for comparison). Fit. I think they are universal sizes.

I didn't find one when I looked online a few months ago. Perhaps it's best to just contact the Swiss office of König + Neurath? +41 (0)52 770 22 42 info@koenig-neurath.de

Yes that works, the backrests are also adjustable in height ;)

Today nothing is free, and what is free or gratis has a special high price... why don't you just buy a nice carpet to go with it?

Yes, the armrests can be removed. The chair is fully adjustable, I doubt it will fit people slightly taller.

There are no hard floor castors included. I bought these for hard floor use: https://www.galaxus.ch/de/s12/product/topstar-hartbodenrollen-set-buerostuhl-2473936. However, they are of much poorer quality than the original castors (which are carpet castors).

Information about the successful dispatch of the goods will be sent later in the evening of the day of dispatch.

Well, I'm not 1.90 tall, I'm 1.86 m. but I've just raised it and I can certainly raise it another 10 cm. so I'd say it's suitable for 1.90 too. You can't raise the backrest individually, but I think it's big enough. The armrests can also be set very high. = I would say it is not a problem for 1.90. The chair is very good. Also not susceptible to dirt etc.

Is the question still relevant?

No rolls with me on parquet.... is no problem ;)

According to enquiries, we unfortunately do not have any suitable hard floor castors that we can recommend to you. Otherwise, you could go to a furniture store with one of the castors as a reference and buy it there.

I have been using this model every day for over a year and have never had any back problems due to the chair. Moreover, the lumbar support, as well as all other functions, can be easily adjusted individually. I am completely satisfied with this model and would recommend it to anyone with a clear conscience.

remeasured: 11 mm

These wheels are made for carpets and unfortunately we do not have wheels that fit this chair for hard floors.

I use the chair with carpet castors on linoleum floor (with office chair base from Ikea) without any problems.

I would say that they brake as soon as you sit on them, because you don't want to roll away while sitting and you want to be able to move the chair easily when no one is sitting on it. anything else would make no sense to me. On the manufacturer's website you can see that there are 3 types of castors "standard" 60 castors for carpeting + 60 castors for plastic flooring.