Due to the oval shape of the cuffs these heavy dungeon leg irons are more comfortable to wear than round versions. They are made of stainless steel. The cuffs\' height is 3.7 cm, the thickness is 8 mm, the inner diameter is 7.1 cm x 8.6 cm. The connecting chain is 35 cm long. All edges are perfectly smooth. Each cuff is locked by an allen screw, a matching allen key is included. Weight: 1675 g