Heavy Duty Steel Wrist or Ankle Cuffs Our highly polished stainless steel ankle cuffs are the culmination of bondage fashion and function. Cold hard steel will keep your slave or sub in their place, while the gleaming, almost surgical look of the shackles reflect your authority. Smoothly crafted for extended wear and play, they are the perfect companion piece for our wrist cuffs, for the complete dungeon collection. Smooth swiveling o-rings give you the power to chain your partner into any position, or affix to any bondage accessory. An included key opens and secures the cuffs via a sturdy and discreet lock. Clips to connect both of the cuffs is included as well. approximate measurements MediumInner Diameter: 55mmThickness 5mmWidth: 20mm LargeInner Diameter: 60mmThickness: 5mmWidth: 20mm Extra LargeInner Diameter: 90mmThickness: 5mmWidth: 20mmThis product is certified 100% Non-Magnate and medical-grade steel. Beware of cheaper products that are not solid surgical steel but chromed steel or poor quality surgical steel that contains Magnate. Magnate is the ingredient that makes steel rust. We will only include this endorsement on our 100% surgical steel products.