I thought that I was a kind of cake...
Cannoli are yummy Italian pastries.
Or no, maybe installing without me would be an ache!
Replacing a tooth without a root Canal? Ouch!
Oh, I've got it now: I surely convey stuff.
Canals are used the world over for transportation of people, goods, and cannoli.
I give up... I'm some pasta. Enough!
Cannelloni are a cylindrical type of pasta generally served baked
Which makes the final answer:
"Canal," I guess.