There are not so many designs of the metal sand timers, because of the mold cost. So if we have the mold, that design should be or used to be a hot-selling item. Most of the metal sand timers are for home decoration and making tea.
MS001 3-in-1 Perfect Tea Timer Size: L 9 * W3 * H 8 cm
MS003 3 Minute Metal Mini Sand Timer Size: Dia 2.5 * H 6.8 cm
MS006 3 Minute Metal Tea Timer Size: Dia 4.5 * H 7.8 cm