The basic module with the possibility of plug connection in the inner tube of both torsion springs. With a series connection of both torsion springs, the double torsion angle can be achieved while maintaining the torque. With a parallel connection of both torsion springs, the double torque can be achieved with a simple angle of rotation. A mutual deflection over the element zero position is not possible. The insertion depth of the inserted square should be at least 2x longer than the material cross section. With regard to the dimensions of the inserted inner quadrant, contact your regional representative.