The two leading stars or the two main attractions — the pair considered the main draw.
この劇団の二枚看板はベテラン俳優の佐藤さんと若手の田中さんだ。
The troupe's two leading stars are veteran actor Sato and young actor Tanaka.
店の二枚看板は自慢のラーメンと手作り餃子だ。
The shop's two main attractions are its signature ramen and handmade gyoza.
人気の二枚看板が揃えば、集客に大きく貢献する。
Having two popular draws together can greatly boost customer turnout.