The key in knob cylinder adaptor for 83 series is an auxiliary lock component designed for 83/45 series padlocks. this adaptor pack allows for the integration of various cylinder types into the 83 series lock body. the kit includes a bible cover and 3 tail pieces, providing compatibility with schlage, medeco, ilco, and oem sargent cylinders. the adaptor measures 1.38" in length, 0.63" in width, and 0.5" in height. this component is constructed from brass, ensuring a fit for the specified lock series. it serves as a functional part for security and architectural hardware setups, facilitating the use of different key-in-knob cylinders within the 83/45 series system. this adaptor pack is specifically engineered to bridge the gap between the 83 series lock body and the selected cylinder, allowing for a consistent locking mechanism. the included tail pieces are designed to interface with the specific cylinder brands mentioned, ensuring that the key-in-knob functionality is maintained. this component is intended for use in professional locksmithing and security hardware maintenance, where specific cylinder compatibility is required for the 83/45 series padlocks. the brass construction provides the necessary structural integrity for the internal components of the lock assembly.