The VIER CYLINDERS V5 100mm Euro Cylinder and Turn in Polished Chrome is a high-security locking solution certified to BS EN 1303 standards and suitable for fire doors rated FD30-60. This premium cylinder features advanced anti-drill and anti-pick technology, along with a break-off system for enhanced security against forced entry. The polished chrome finish provides a sleek, professional appearance that complements modern door hardware. Supplied keyed to differ, each cylinder operates with its own unique key, making it ideal for multi-occupancy buildings or situations requiring individual key control. The euro profile design ensures compatibility with standard euro lock cases, while the thumbturn feature allows for convenient keyless exit from the secure side.