Ergerite Castors for Adjustable Height Table Legs - Pack of 4This pack of four table castors is designed for Ergerite height adjustable tables, enabling easy mobility and flexibility in classroom setups. The castors are free rolling but can be locked for stability, ensuring a safer environment. Easy to attach and intended for indoor use, these wheels are ideal for moving tables between classroom spaces. Why This Product is Helpful Enhances table mobility in classrooms. Lockable castors provide stability when