This is a set of three casting rings (metal rings) used in dental technology. The sizes are LL x 2 and M x 1, according to the markings on the rings/packaging. LL: Diameter 4 cm, Height: 4 cm M: Diameter 3 cm, Height: 3.6 cm [Contents] ・LL size: 1 unused ・LL size: 1 used ・M size: 1 used [Condition] ・Unused LL: Unused item. ・2 used items: There are scratches, discoloration, and dirt from use. Each has the numbers 107 and 1310 burned onto them. Damage: No cracks, chips, or deformation. Please check the photos. *Used items are sold as-is.