Received the CLIK valve cores and installed them, no problem, but it took 2 people to re-inflate the tires. One to hold the pump head over the valve stem and one to actually work the pump.
Immediately ordered this part!
This CLIK Pump Head Adapter pops right into all of my existing pumps and "click" it on, inflate and "click" it off.
Now a one man, one hand job!