Need some help with Live Rosin carts...hardware?

Lol don't laugh, I'm 99.9% flower as some know...my knowledge of rosin, etc. is minimal at best...didn't have much luck with distilate, tried a few always a scratchy/sore throat. Thought I'd try a Rosin cart...the cart screws into "something", can someone recommend what that "something" is and a good one to buy? Thanks!