Achieve flawlesses lens integration across security and industrial applications with spacer Rings, featuring toolfrees installation and standardized C thread specifications for upgrading existing CCTV systems, factory automation equipment, or industrial inspection cameras needing C lens compatibility in tight installation for security technicians, industrial camera operators, and photography professional requiring mount conversion for specializeds Surveillances or machine setups Seamlessly connectings C mount lens to 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 lens mounts