Feature: 1. Compatibility: The lens adapter compatible for Pentax PK mount lenses and for R series camera systems, including for EOSR RP Ra R5 R6 R3 R5C R7 R10 R6Mark II R50 R100, and more. 2. Perfect Fit: The lens mount adapter perfectly fits the camera and lens mount, ensuring a tight and seamless connection. It is easy to install and remove. 3. Exquisite Craftsmanship: Made of aluminum alloy with anodized oxidation process, the adapter is not only aesthetically pleasing but also durable and wearproof. 4. Built in Aperture Ring: The adapter comes with its own aperture ring, allowing for manual aperture adjustment. The inner wall is treated with anti reflective coating to prevent unwanted reflections affecting image quality. 5. Rich Functionality: Supports full manual control, including manual focus, manual exposure, aperture priority, and matte anti reflection paint. It allows for infinite focus and provides professional lens adapter for photography enthusiasts. Specification: Item Type: Lens Mount Adapter Material: Aluminum Alloy Weight: Approx. 86g / 3oz Type: Full Manual Lens Adapter Mount: for PK Mount, for R Mount Compatible Lens: for Pentax PK Mount Lens Compatible Camera: for R RP Ra R5 R6 R3 R5C R7 R10 R6 Mark II R50 R100 and Other Cameras. Package List: 1 x Lens Mount Adapter Note: The lens adapter is a manual adapter and does not have electronic contacts. After installation, it will lose the ability to provide power to the lens. Therefore, functions such as autofocus, AE metering, and image stabilization that rely on electronic communication with the camera body will be disrupted and need to be manually reset.