3 Piece Econo-Lock with Carboy Bung (Set of 2)

What size - diameter in inches across thie top of bottle or jug - do they fit?

I this airlocks compatible with better bottle (plastic) carboys?

Does this fit into the Mason Re-cap? http://www.amazon.com/gp/product/B00JV1CV1A/ref=gno_cart_title_2?ie=UTF8&psc=1&smid=AJHGXY4OFIPO4

will this work on a .5 gallon plastic juice jug?