1. Material: 304 stainless steel
2. Function: self-defense
3. Play with defensive EDC equipment, not wearing decorative rings, so the size will be slightly larger
4. Convenient and quick to take, and can be quickly worn on the fingers for self-defense in emergency situations
5. Weight: about 45 grams
6. Inner diameter 22mm
7. Circumference is about 61 mm
8. Ring width 15mm