The Diamond Red are handcuffs made of durable metal, with a shining surface, equipped with a chain and two keys for their release, ideal for bondage enthusiasts. They feature an adjuster and a small quick-release lever, so they can be opened even in the event of losing the keys. To use them, simply open them via the safety button or the keys, place the wrists inside, and tighten them in the desired way, adjusting the width.