Features: This lens mount adapter is mainly used for connecting the "4/3 mount lens" to "cameras with Micro 4/3 Mount". Electronic auto focus. High-technic treatment on the contact pins, permitting perfect signal transmitting between lens and camera. Equipped with lock & stop pin. Comes with front & rear caps for protecting. 1/4" tripod mount hole. The camera can auto focus and take the object photo immediately if using compatible with high speed AF lens. Specifications: Material: Metal Compatible lens: for 4/3 Mount lens Compatible cameras: for Micro 4/3 Mount camera Front mount: for 4/3 Mount Rear mount: for Micro 4/3 Mount Item size: 6.5 * 6.5 * 2.3cm / 2.6 * 2.6 * 0.9in Item weight: 83g / 2.94oz Package size: 10 * 10 * 5cm / 3.9 * 3.9 * 2.0in Package weight: 134g / 4.73oz Package List: 1 * Adapter 2 * Cover 1 * User Manual(English&Chinese)