The Master Lock Retractable Key Tether for Key Lock Boxes 5490EURD is a secure and convenient solution for keeping your keys safe. This retractable steel cable, made of durable plastic, provides a tamper-proof way to store your keys in a key lock box. With a 2-year manufacturer warranty and being part of the Select Access model, you can trust in the quality and reliability of this product. The sleek black design and French manufacture add a touch of style and expertise to your home security system.