Features: Used for cameras with a diameter of 18MM. Made of hollow rubber, it can be touched softly even with eyes. Eyecup is mainly used to prevent light from entering through the eyepiece during long-term B-bulb exposure to take pictures. Prevent scratches on the EB eyepiece when the camera is not in use; prevent debris from entering the viewfinder when the camera is stored. Provides protection for camera eyepiece and keep the camera viewfinder away from dust. Plastic body cushioned with soft rubber for comfort and protect your camera. Applicable models: Compatible with CanonEOS 5D 20D 30D 10D EOS D60, EOS 66, EOS 300, EOS D30, EOS 10, EOS 300V, EOS 88, EOS 100, EOS 500, EOS 500N, EOS 700, EOS 750, EOS 850, EOS 1000N , EOS 1000FN. Package Includes: 2x Viewfinder Eyepiece Protective Cover Specifications: Material:Plastic+Rubber Size:Approx.4x2.5x0.8cm/1.57x0.98x0.31inches Color:Black note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item.