Zachte zwenkwieltjes voor Tabourets en zadelkrukken aluminium this is a must have addition this is a must have addition to your practice Please note: the ZenGrowth Legian chair is a bit tricky to fold and unfold and we recommend not to move the chair too often Did you order a stool or saddle chair but received the wrong type of casters for your flooring ensuring they won't scratch hard surfaces