The Canon Extender EF 2x II Teleconverter Lens is a high-quality accessory designed for Canon DSLRs with an EF mount. This lens provides a fixed focal length and features auto focus capabilities, making it ideal for photography enthusiasts looking to enhance their telephoto capabilities. The lens comes with front and rear caps, is constructed with durable aluminum material, and is compatible with 52mm filters. Made by Canon in Japan, this teleconverter lens is a reliable and versatile addition to any camera setup.