The Corbin Russwin 1 1/8 Mortise Cylinder CR1000 118 A01 L4 626 is a high-quality and durable locking cylinder made of brass with a satin silver finish. This cylinder is designed for commercial use and features a 1 1/8 inch length, making it suitable for a variety of security applications. With the trusted Corbin Russwin brand behind it, this mortise cylinder provides reliable protection for your business or property.