Specification: Introduction Framework: Slim Double thread: Yes Multi-coated: Yes (3 paint) Optical materials: high quality optical glass Frame Material: Aluminum Digital water proof and scratch resistant multi-coating offers both protection to the glass and helps to improve light transmission and image quality. High quality aluminum filter ring helps to prevent jamming and provides additional strength. Constructed from high quality glass for optical clarity. The slim filters are specifically designed for use with wide angle lenses. Portable plastic box with soft foam. Features: Haida MC C-POL (PROII) filters are constructed from high quality glass for increased optical clarity and color fidelity. They feature an aluminum filter ring for durability as well as jamming prevention. This filter is both an anti-reflection coating as well as a protective surface. It helps to increase light transmission by reducing reflections, scattered light, and ghosting. Additionally, it offers greater protection to the filter substrate and stays cleaner for longer than uncoated filters. Package: Haida Slim Pro II MC CPL Circular Polarizer Filter x1 Payment