Is this the correct size lead for this mechanical pencil?

Is this the correct size lead for this mechanical pencil?

        (lead (refill): 샤프심, 연필심)

Is this the correct size ring your finger?

We have some notebooks with no lines.

That'll work / do. = Sounds good. (그거면 되겠네요~)

stationery store. (문구점)

I'll just use that manila folder in the kitchen drawer.

manila folder

be obsessed with : ~에 환장하다 라는 뜻도 있다.

I would buy notebook at a stationery store in Korea and stock them at home. (쌓아두다)