Cylinder lock with pretensioned door cylinder — reliable, compatible security for residential and small commercial doors. Why choose this lock Reduces unauthorized entry and theft with an AB key cylinder designed for anti-theft protection. Pretensioned door cylinder and extended core with extended buttons deliver consistent, reliable operation and improved resistance to forced manipulation. Solid brass body for long-lasting durability and compatibility with standard door hardware and fittings. Key features Sizes: available in 65, 70, 80, 90, and 115 mm to fit most interior and exterior doors. Cylinder type: AB key cylinder for anti-theft protection. Construction: brass body for corrosion resistance and durable performance. Security detail: extended core with extended buttons increases security options and dependable function. Finish: color option 70 35 35 for a distinctive appearance while remaining compatible with common door hardware. Function: provides reliable protection against unauthorized access and theft for both interior and exterior doors. Practical benefits Easy fit: multiple length options let you match the lock to your door thickness and existing hardware, avoiding modifications. Durable operation: pretensioned cylinder and brass construction reduce wear and maintain smooth key action over time. Enhanced security: AB key profile plus an extended core and buttons give better control over access and resist simple tampering. Typical applications (specific scenarios) Residential entry doors: secure single-family homes or apartment entrances where dependable anti-theft protection is required. Offices and small businesses: control restricted access to work areas, client rooms, and administrative spaces. Storage rooms and utility spaces: protect tools, equipment, or inventory in closets, storage areas, and service rooms. Technical snapshot Cylinder: pretensioned door cylinder Key profile: AB key cylinder (anti-theft) Material: brass body Core: extended core with extended buttons Lengths available: 65, 70, 80, 90, 115 mm Color option: 70 35 35 Suitable for: interior and exterior doors, residential, office/small business, storage/utility spaces Installation note Select the cylinder length that matches your door thickness and existing hardware. The brass body and standard profile are designed for compatibility with common locks and fittings.