This lock is a cylinder component for the Legge 990 Series mortice locks, designed for use in commercial, industrial, institutional, and government buildings. This satin chrome plated (SCP) cylinder is part of Legge's 990MF Series, which offers multi-functional mortice locks and latches specifically tailored. The cylinder features a 6-pin configuration for enhanced security and is compatible with the 990 Series locks that have a 60mm backset. It can be easily integrated into locks that allow for conversion between vestibule and combination functions, providing flexibility in access control. This lock is constructed with durability in mind, using high-quality materials to ensure longevity and reliable performance in high-traffic areas.