Ergotec

The arm of the M-77 is made of metal, the body of plastic. It is mounted using a 4-bolt Allen key and can be mounted on the left or right. Top: Ergotec specifies maximum torques for tightening the screws. The adapter for internal mounting costs €11.95 extra, but is made of metal, fixes very firmly (4-bolt Allen key) and also has torque specifications...