Features: Made of high quality material with exquisite workmanship, powerful and sturdy, rust-proof and impact-resistant. Specially designed replacement forCanon EF EF-S lens to EOS R RF mount full frame cameras. With gold-plated contacts, can greatly improve the data transmitting performance between the lens and camera; 1/4 inch screw hole design, can be easily mounted to a tripod-, freeing your hands. Comes with a practical wrench, convenient for adapter ring installation and removal. Support fast- and stable auto-focus and IS image-stabilization function, shooting clearer and more high-quality photos. Support fast- EXIF- information transmission and electronic aperture- control. Specifications: Model: EF-EOSR Color: Black Material: ABS+Metal Camera-Mount Diameter: approx 50mm/1.96inch Lens-Mount Outer Diameter: approx65mm/ 2.5inch Product Size: approx 8x7x3cm/ 3.1x2.7x1.1inches Product Weight: 95g/0.2oz Note: After installing the adapter ring, please set the lens to AF-mode if the AF- function is required. Due to the problems of lighting effects and shooting angles, there will be certain tolerances in the product, please understand. Please allow 0-2mm error due to manual measurment. Package includes: 1PC Adapter Ring 1PC Wrench 1PC Cleaning Cloth (random color) 1PC User Manualv