ESD stainless steel stools with holes in chair seat, it's with nylon castor or stud and fixed footrest ring
Seat Material: ESD Stainless Steel
Size: Chair Seat∮360mm
Adjustable Range: 460mm-605mm（160mmAir Spring）
Surface Resistivity: 104-106Ω or 106-109Ω are available.
System Resistivity:: ≤109Ω
Config: Carbon Steel Chroming Foot,High-Strong Conductive Nylon stud or castor with fixed footrest ring and Conductive Chain