with exquisite workmanship, powerful and sturdy, rust-proof and impact-resistant. Specially designed replacement forCanon EF EF-S lens to R RF mount full frame cameras. fast- and stable auto-focus and IS image-stabilization function, clearer and more photos. fast- EXIF- information transmission and electronic control. Comes with a practical wrench, for adapter installation and removal. With gold-plated contacts, can greatly improve the data transmitting between the lens and camera;