Material: stainless steel
Female: inner diameter 57*47mm, high 22mm, thick 7mm
Male: inner diameter 65*53mm, high 22mm, thick 7mm
1.safe material, high-quality 304 stainless steel, safe and harmless.
2. comfortable to wear, fine polished to make the whole cuffs smooth and rounded. not easy to fall off.
3. high performance built-in lock, open lightweight and convenience