hjh OFFICE 619045 hard floor castors ROLO ESD 11 mm / 50 (pack of 5) electrically conductive

Pressure-activated Saftey Castors: the Chair rolls when seated. When standing, the castors brake to prevent unintentional movement. pressure-activated, the castors reopen , and the Chair is again movable. Electrically conductive chair wheels for discharging static electricity High-quality double castors for hard, conductive floor coverings Made In Germany When choosing, please note correct pin diameter and ideally use the old rollers as a template. For best results when measuring, we recommend measuring the old roller using a set of callipers., Weight: 2.20462262 Pounds, Manufacturer: hjh OFFICE