Hila 2.0x Extender (Doubler) for Canon EOS Rebel XTi

Canon-mount teleconverter with a 2.0x magnification factor that doubles your lens focal length. Maintains full communication between lens and camera and is compatible with EF and EF-S lenses. Preserves metering and VR functionality when mounted. Designed to keep image resolution and contrast high on Canon EOS bodies. Simple to attach and detach. Includes a 10-year warranty.