Aluminium Base Code AB 10: 5 pronged die-cast alunimium polished base with dual-wheel polyrethane castors.(Pic 1)

Trumpet Chrome Base Code TB 98: Well-designed chrome finish polished round plate base complete with height adjustable pneumatic cylinder.(Pic 2)

Rotary synchronized Mechanism Code MH 008 30: Rotary Synchronized machnism designed for seat height adjustable , multi-position locking and revoling tension control.(Pic 3)