Toy Cubby Kids Pretend and Play Double Lock Metal Handcuffs with Keys 1 Double Lock Metal Handcuffs with Keys. Handcuffs measures 4 inches with polished metal finish, perfect for pretend play police and also a great combination for your police outfit. Play handcuffs are durable and made to last long. Great for kids and also served as a great party favor for your children police themed birthday party, can also be used during Halloween's costume party. Equipped with safety release pin if accidentally lose the pair of keys and also a great gift to children.