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 adjustable seat angle. Suitable for saddle seats and standing seats.

Steel mechanism with adjustment lever.

Steel mechanism without adjustment lever.

Steel mechanism with adjustment lever, with attachment for open and flat back bar.