Siemens model FPP Vertical M2/M3 assembly.  Includes two Teknic model M-2330-354-H1 servo motors, with 4000 Quad/Rev.  Also includes two Warner Electric model ERS-26 holding brakes, with Voltage 90DCV, Watts 16.0.  Brakes also labeled P/N 5158-170-015. Used.