1. Material: brass 2. Weight: about 28 grams/piece 3. Size: the outer diameter is about 34 mm, the wire diameter is about 4 mm 4. Process: surface polishing treatment 5. Features: hand-made, carefully polished, with anti-lost nut locks on both ends, simple and individual, strong and durable 6. Note: only the key ring, excluding other items in the picture
