Combining craftsmanship, finesse, and aesthetics, the 7 cm tin-glass jam jar offers superior quality in terms of food safety. Its durable structure will accompany you for years, maintaining its shine on your table without the need for constant polishing. 95% - 97% refined tin is enriched with copper and antimony for strength and durability. Each piece, meticulously crafted using traditional methods for 40 years, represents the highest quality.