CML Door Knob Keyed Entrance Lock Set in Matte Black. CML Keyed entry door knobs are built with top quality materials and components such as the stainless steel knobs, brass lock cylinders, and an all metal latch assembly. The electroplated matte black finish is incredibly durable and will look like new for years to come. An entry style door knob set has a keyed lock on the outside that can be locked and unlocked from the outside with a key. On the inside, it can be locked and unlocked by a convenient thumb turn knob. 5 pin solid brass, anti-bump lock cylinders provide a higher level of security. 3 plated brass keys are included. Every CML door knob has an ANSI Grade 3 certification, which is a certified test to ensure the lock set functions flawlessly and shows no wear for more than 200,000 cycles. CML Hardware fully backs all of our products and we provide a complete 5-year warranty that includes durability of the finish and all mechanical function. A CML door knob offers everything you could want in door hardware providing durability style, smooth operation,strength and security.