Features: Seamlessly connect C mount lens to CS mount CCTV security cameras with 5mm 10mm aluminum adapter Rings, ensuring precise compatibility for industrial and Surveillances imaging systems. Engineered with aluminum construction and precise 30mm outer diameter design, this extension tube maintains opticals alignment while converting between C/CS lens mounts effortlessly. for security technicians, industrial camera operators, and photography professional requiring mount conversion for specializeds Surveillances or machine setups. for upgrading existing CCTV systems, factory automation equipment, or industrial inspection cameras needing C/CS lens compatibility in tight installation. Achieve flawlesses lens integration across security and industrial applications with 5g spacer Rings, featuring toolfrees installation and standardized C/CS thread specifications. Specifications: Materials: ABS Styles: 5mm , 10mm (optional) Package Includes: 1PC C Mount to CS Extension Adapter note: Please allow 0-1cm error due to manual measurement. make sure you not mind before bid. Due to the differences between different monitors, the Pictures may not reflect the actual of the item.