High Quality Material: Made from high quality material, high quality stainless steel with nylon rollers, strong, durable, not easy to rust and wear. The surface is smooth and will not scratch your skin.High quality pulley: Nylon pulley for smooth sliding. Opening and closing will not make noise and will not disturb the sleeping person.Package included: 12 door locksEasy to Install: The installation of the double roller door ties is quick and easy, even if you never have experience, understand right away.Multiple Uses: Suitable for cabinet doors, lockers, vanities, doors, etc. Ideal for homes, offices and shops. Note: Please allow 1-3 mm error/1-3g weight error and actual product color may vary due to lighting conditions.