Features: Improved Design: Based on the original design with practical optimizations, enhanced details, and added quick-release plate functionality. High-Quality Materials: Constructed from high-temperature aluminum alloy die-casting, CNC machining, automotive paint finish, integrated flocking, and copper-core stainless steel inserts. Lightweight & Durable: Weighs approximately 135g, with an inner diameter of approximately 65.5mm and a width of approximately 18mm. Lens Protection: Includes a silicone pad to protect your lens. Compatibility: Designed for EF 70-200mm f/4L IS II USM lens. Specifications: Material: Aluminum Alloy Net Weight: 150g Note: Please allow for a 1mm error due to manual measurement. Color may vary slightly from the online image due to monitor differences. Package Includes: 1 x Lens Mount Ring