This product was likely sold by Anatometal about 5-10 years ago. (This item is a rare item because it is no longer manufactured by the manufacturer.) I purchased it online from ANATOMETAL. The material is titanium, and the size is 12G. It has a blue hue depending on the angle. From the internet ↓ Titanium is a lightweight, strong, and rust-resistant metal. It has strong corrosion resistance to seawater and is harmless and safe for the human body, so it is used in a wide range of fields such as aircraft, medical equipment, construction, and sporting goods. On the other hand, it also has disadvantages such as high price and difficult processing. It has some minor scratches because it has been used a little. For those who don't mind ☺︎! Search #AyaBrandItems and #AyaApparelAccessories to see the items I am selling. I have many items that I haven't listed yet. Please feel free to ask questions like "Do you have this?" ☺︎ ★ No price reduction, please consider this price. ★ This is a branded item, and returns are not accepted to prevent switching. Please understand this before purchasing m(_ _)m