Features: Made of high-quality material with excellent workmanship, durable and sturdy, rust-resistant and impact-resistant. Specially designed replacement for EF and EF-S lenses to EOS R RF mount full-frame cameras. Equipped with gold-plated contacts to enhance data transmission between the lens and camera. 1/4 inch screw hole design allows easy attachment to a tripod, providing hands-free operation. Includes a practical wrench for convenient adapter ring installation and removal. Supports fast and stable autofocus and IS image stabilization function, enabling clearer and higher-quality photos. Supports fast EXIF information transmission and electronic aperture control. Specifications: Model: EF-EOSR Color: Black Material: ABS + Metal Camera Mount Diameter: approx 50mm / 1.96 inches Lens Mount Outer Diameter: approx 65mm / 2.5 inches Product Size: approx 8 x 7 x 3 cm / 3.1 x 2.7 x 1.1 inches Product Weight: 95g / 0.2oz Package Includes: 1 PC Adapter Ring 1 PC Wrench 1 PC Cleaning Cloth (random color) 1 PC User Manual Note: After installing the adapter ring, please set the lens to AF mode if autofocus is required. Due to lighting effects and shooting angles, slight variations may occur; please understand. Please allow 0–2 mm error due to manual measurement.