The elegant combination of elegance and durability: Ø 8 cm Tin-Glass Jam Jar. Produced with food safety as a priority, this jam jar provides confidence with the natural food compatibility of tin. You can enjoy it for many years without the need for constant polishing. Made from a special alloy of 95-97% refined tin, copper, and antimony for durability. These unique pieces, produced through 40 years of traditional handcrafting, meet the highest quality standards.