- Can be transformed into a Self Defense Knuckles very easily, unique creative design!
- It can pass airport security check easily.
- Riveted connection—will not come loose.
- Full 304 Stainless Steel Made, Black Oxide Finish, no rusting, and very durable.
- Only 110g, very light.
- Inner diameter is 23mm, approx Size 13. Special attention before purchase.