250 3100 SPM by YOKOGAWA - Buy or Repair at Radwell - Radwell.com
MPM SPM logic Board – IslandSMT
SPM-250 Iris damper with bulb - Dampers - Systemair
Viking Drill and Tool by Norseman 57810 SPM-21 Type 250-UB 135 Degree Split Point Magnum Sup Prem Mech Drill Set (21 Piece) - Mechanics Length Drill Bits - Amazon.com