Conductive chair castors, ESD, hard, for carpeted floors

For use on soft carpets - Conductive conductive - suitable for the following Warmbier ESD swivel chairs: - Business Chair (order no. 804983) - Comfort Plus (order no. 803145) - Comfort Standard (order no. 836830/836840) - Economy Plus (order no. 804992) - Economy Standard (order no. 836770/836780) - Industrial PU-Chair (order no. 837580)nr. 804992) - Economy Standard (order no. 836770/836780) - Industrial PU-Chair (order no. 837560) - Vinyl Chair (order no. 837550) - Fixation of the chair when sitting - Version:hard, for carpeted floors