Peerless has been making chain-link handcuffs since they were founded in 1914. Over ninety years later the classic swing through design continues to be the industry standard. Black Oxide finish is standard issue for Military Police. Peerless handcuffs incorporates spun rivet construction for increased strength and durability and are manufactured in the U.S.A. Peerless offers a lifetime warranty against manufacture defects and meets or exceeds the U.S. National Institute of Justice standards. Two keys are supplied. Box measures 4 1/2" x 3 1/2" x 1". Weighs .71 lbs. Please specify finish.