Steel mechanism with rubber part, which makes dynamic seating possible.

Mechanism with synchron movement for the back- and seat angle. The back angle can be set separately with a knob. The back pressure of the backrest can be adjusted to the body weight.

Mechanism with synchron movement for the back- and seat angle. The back pressure of the backrest can be adjusted to the body weight.

Steel mechanism with independent back- and seat tilt adjustment, with attachment for a ratchet back bar.

Steel mechanism with independent back- and seat tilt adjustment, with attachment for oval back bar.

Steel mechanism with independent back- and seat angle adjustment, with attachment for oval back bar.