
5 Row-Pins (19 pins) High Precision Cylinder Lockbody Mortise Lock. Super C Grade Security: Features 19 pins, anti-pick, anti-drill, anti-bump, and anti-technical opening protection. High Precision Design: Uses 38 stainless steel marbles and T-shaped/mushroom-shaped pins for enhanced secrecy. Customizable Door Thickness: Door thickness fits are customized to meet specific installation requirements. Premium Material Construction: Body made of Brass HPB59-1, keys from Copper Nickel, and springs from Stainless Steel. 5-Year Warranty Coverage: Provides a comprehensive 5-year guarantee for peace of mind and quality assurance. ISO9001 Certified Quality: Factory holds ISO9001:2015 certificate and passes BSI KITEMARK and EN1303:2005 tests. Patented Invention Technology: Recognized by State Intellectual Property Office with unique four-sided key teeth design. Modular Cylinder Expansion: Plug features modular design allowing expansion to various cylinder types.