Safety with Double-Layer Bonding : Features a dual-layer bonding process that keeps shattered fragments securely in place even if the filter breaks, offering extra protection for your expensive camera lenses. Polished for Ultra-High Definition : Both sides of the filter are polished for enhanced light transmission, ensuring sharp, crystal-clear image quality with no loss in clarity. Polished for Ultra-High Definition : Both sides of the filter are polished for enhanced light transmission, ensuring sharp, crystal-clear image quality with no loss in clarity. 28-Layer Nano Coating: Equipped with double-sided 28-layer nano coatings for water, oil, and scratch resistance, making it easy to clean while preventing fogging and reducing the risk of scratches. Enhanced Grip & Usability: CNC-designed trapezoidal pattern on the frame increases friction, making it easy to attach and remove the filter from your lens at any time. This filter is compatible with all 55mm lenses. Please verify your camera's lens thread size before ordering. This number is beside a "ø" (diameter) symbol. K&F CONCEPT is the world's No.1 brand in terms of lens filter online sales volume among camera-accessory-focused brands. Source: Euromonitor, 2024 data.