[Features] First, attach the thin metal ring to the front frame of the compact digital camera. (There is no problem with the lens telescoping or retracting at all. MagFilter attaches securely to your digital camera with a strong magnet built into the main body. When you want to use CPL filters, simply attach the MagFilter to your camera with one touch. Grooved bevel design ensures MagFilter stays in place without shifting The MagFilter can be removed quickly when not in use. (Magnetic design makes it easy to put on and take off.No complicated screws. You can return the camera back to its original compact form. This innovative product is simple, wasteless, and can improve the functionality of your compact digital camera without compromising portability. Specifications: Filter Diameter: 1.7 inches (42 mm); Material: Main unit: Lightweight aluminum, optical glass (made in Japan); Premium coating; Weight: 0.5 oz (15 g); Metal ring for attaching cameras: outer diameter 1.5 inches (37 mm), inner diameter 1.3 inches (32 mm).