Material: Stainless Steel

Male Size Kit 
Male Size Collar inner diameter 13.7cm, height 2cm,thickness 0.5cm
Male Size Handcuffs inner diameter 6.5*5.3cm, height 2cm,thickness 0.5cm

Female Size Kit
Female Size Collar inner diameter 11.7cm, height 2cm,thickness 0.5cm
Female Size Handcuffs inner diameter 5.7*4.7cm,  height 2cm, thickness 0.5cm