Matco-Norca212KIT Vacuum Breaker Kit with Cap for Sillcock

The cap on my (unknown brand) of frostproof sillcock is cracked. The inside diameter of the cap is 30mm or 1.20 inches. Fine thread. Will this fit?

does this part include the plastic mechanism and the rubber washer part inside the plastic piece i have the 10-9a matco

I have an outside faucet that is leaking. Will this stop the leaking?

does this fit a wolverine brass bibb looks the same or where do you buy parts for a wb bibb