Heater valve components. Notice the two black rubber objects on the left hand. The smaller of the two is used in 5/8" diameter tubing valves and the larger is used on the 3/4" diameter tubing valves in combination with the shaft immediately to their right.
The top center shaft is an example of the neoprene rubber type shaft. The far right shaft is an example of the stainless steel bladed shaft. The lower right large diameter object is the diaphragm that all type valves must have replaced. This is the seal that usually leaks on the floor board of the car when you first notice there is a problem with the heater control valve.