Made of metal. 107g per piece, 82mm, stem hole 26mm Set of four Will ship as soon as possible (weekdays when the post office is open). Basically, shipping will be by standard mail (teikeigai), or by Letter Pack if the item is large. Standard mail is delivered by the post office only on weekdays. Due to being busy, transactions will be silent unless necessary, such as when providing a tracking number. Messages are also unnecessary. Please consider that the price includes shipping (except for cash on delivery) and packing costs.