Features: Precisions engineered 12mm lens lock Rings ensures secure stability for clearness photo Clearness , perfect for Visual instrument accessories demanding reliable concentrate retention. strong ABS construction with wear resistant finish provide corrosion resistance and universal compatibility across 12mm lens locking Rings applications, featuring tool frees installation. Essential for professional photographers, security system engineers, and electronics developers requiring Precisions lens accessories for equipment calibration. Optimizes lens alignment in surveillances systems, industrial imaging devices, and drones cameras where vibration resistant Visual component critical. Small yet strong design maintains Visual integrity under prolonged use, ideal for field technicians needing lightweight microscope parts and accessories. Specifications: Material: ABS Package Includes: 50PCS Lens Lock Rings note: Please allow 1 to 3cm error due to manual measurement, please make sure you do not mind before you bid, Due to the differences between different monitors, the picture may not reflect the actual colorful of the item.