[There are] four things [that] Rabban Gamliel rules tamei and the Sages rule tahor: The metal cover of a teni belonging to householders, and the hanger of strigils, and unfinished metal utensils, and a tray that split into two. But the Sages agree with Rabban Gamliel in [the case of] a tray that split into two [pieces], one large and the other small, that the large one is tamei and the small one is tahor.