We have ‘2 Golf Lever Assemblies’ … Target or Swinging Lever and Brace or Hitting Lever.
We appropriately refer to the ‘Flat Target Wrist’ as a ‘Hinge’ and as one of the ‘13 Primary Articulating Human Joints’ (PAJ). It is useful to use good appropriate English names and terms!
The ‘Flat Wrist Hinge’ is one of the ‘9 Configurations or Positions’ that function around 3 actual axes or wrist hinge pins. Think of the ‘Horizontal Door Action and its Vertical Hinge Pins’. The Target Wrist acts ‘Horizontally around a Vertical Hinge Pin’ just like the door.