These are Socket Wrench Inserts for Staubli MC4® type solar connections.  Tool grips the outer shell of an MC4® connector to provide a safe and easy way of holding and tightening the body. 

OPTIONS

• PV-WZ-AD/GWD - socket wrench insert to tighten
  • 1/2-inch square-drive interface, used in conjunction with a proper torque wrench/tool (sold separately)
  • 17mm working end
• PVSSE-AD4 -  socket wrench insert to hold the cable gland while you tighten.
  • It essentially is a counter-hold so the body does not rotate while you tighten, used in conjunction with a spanner wrench (sold separately)
  • 15mm

Please refer to the Staubli manuals to determine what Socket Wrench Insert(s) you may need. 

MC4 Test Connector MA231 Assembly Instructions

MC4 Test Connector MA260 Assembly Instructions