KIBOW Universal Propane Tank Adapter for Old P.O.L Style to New Style/100% Solid Brass

Does it connect to 3/4 npt?

My grill is old style valve. the only tanks i can get are new style. i think this product is the other way around. is there an adapter for me?

I got this connecter to the grill and need another connecter connects to the natural gas hose

will this adapter fit on the end of a 3/8" natural gas hose?