The Model 7003HS is designed for high risk prisoner restraint and transport situations. The Model 7003HS does not operate with a standard handcuff key. The Model 7003HS incorporates a Model 7003 Waist Chain with a MEDECO® or ASSA® Desmo high security lock system and Lexan® polycarbonate housing. The Lexan® polycarbonate housing is nearly unbreakable and is color coded orange for high visibility. Other features include spun rivet construction, double lock capability, and profiled edges to reduce risk of tissue and nerve injuries. All products come with two keys, a double lock activator, and a lifetime warranty for manufacture defects. Made in USA. NOTE: For more info CLICK ON PICTURE