Premium KIK (Key-In-Knob) Cylinders are machined engineered and manufactured to OEM specifications. Re-keyable to original manufacturers systems. Designed to work with most Grade 1 and 2 Knob Lock, Lever Locksets and Deadbolts. These cylinders are used in cylindrical locksets, deadbolts and padlocks. Commonly used in sliding patio door locks. The broad selection of models and components within our line provides you with the flexibility to cover numerous applications at a reasonable cost