Constructed with a durable, polyurethane thermoplastic housing, stainless steel working components for corrosion resistance and aluminum side plates for maximum durability and minimum weight. Anti-ratcheting twin disc brake system with an audio indicator lets worker know it is functioning properly. Features 3/16” galvanized or stainless steel cable lifeline, reserve lifeline retention system for added safety, 3,600-lb. rated swivel snap hook and swiveling anchorage loop to prevent twisting of lifeline. i-Safe enabled with RFID technology. Meets or exceeds all applicable OSHA regulations and ANSI standards, including ANSI Z359.1.