Description:Functions: It adopts a screw-in design and can be mounted on lens front without scratching the lens.Fitments: Compatible for Sony 16-50mm f/3.5-5.6 OSS Alpha E-mount Lens SELP1650The four leaves of the lens caps will automatically hide as the lens extends, so you don't need to remove it from the lens when you want to take photos.With convenient feature and slim type design. Dust, moisture and scratch protection for your valuable lensIt helps to ensure that you will not misplace or lose your camera caps.Size Chart:63x63x7mm/2.48x2.48x0.28inch Package Includes:1 Piece Auto Lens caps CoverNote:1. Please allow slightly error due to manual measurement.2. Due to the difference between different monitors, the picture may not reflect the actual color of the item.3. Wish you a wonderful on-line shopping!