Features: Made of high-quality material with exquisite workmanship, powerful and robust, rust-proof, and shockproof. Specifically designed as a replacement for Canon EF EF-S lenses to EOS R RF mount full-frame cameras. With gold-plated contacts, data transmission between the lens and camera can be significantly improved. 1/4 inch screw hole design allows for easy mounting on a tripod, freeing your hands. Comes with a practical wrench, convenient for installing and removing the adapter ring. Supports fast and stable autofocus and IS image stabilization, delivering clearer, higher-quality images. Supports fast EXIF information transfer and electronic aperture control. Specifications: Model: EF-EOSR Color: Black Material: ABS+Metal Camera Mount Diameter: Approx. 50mm/1.96inch Lens Mount Outer Diameter: Approx. 65mm/2.5inch Product Size: Approx. 8x7x3cm/3.1x2.7x1.1inch Product Weight: 95g/0.2oz Note: After installing the adapter ring, set the lens to AF mode if AF function is needed. Due to lighting effects and shooting angles, there may be some tolerances in the product, please understand. Please allow 0-2mm error due to manual measurement. Package Includes: 1 pc Adapter Ring 1 pc Wrench 1 pc Cleaning Cloth (random color) 1 pc User Manual