The wheels will fit very well to Topstar chair OP20QG08 office swivel chair Open Point SY including armrests / fabric cover and thank God I had read in a review of the chair that the first-mentioned roles do not fit - fast Umbestellung has the impending disaster averted and roll since yesterday or better glide I by my office. The rollers can be replaced jiffy - pull out, pure cliffs, done! The existing carpet rolls I kept in the package, if I move on carpet times ...