Specifications: Please choose the caliber that you want. Flip-up lid design, easy to mount, durable to use. It can protect your scope lens from scratches & dust. Type: Lens Cover Cap Quantity: 1 Pc Material: Plastic Caliber Size: 25.5mm/1.00", 28mm/1.10", 30mm/1.18", 34mm/1.34", 35mm/1.38", 36mm/1.42", 38mm/1.50", 39.8mm/1.57", 41mm/1.61", 42mm/1.65", 43mm/1.69", 44mm/1.73", 45mm/1.77", 46mm/1.81", 47mm/1.85", 50mm/1.97", 51mm/2.01", 53mm/2.09", 57mm/2.24", 59mm/2.32", 62mm/2.44", 64mm/2.52" (Approx.) Notes: The caliber is the internal size of the cover, also the size is for the external diameter of the scope, before you buy it, you need to measure the diameter of your scope. Due to differences in lighting and screen settings, the color of the project may be slightly different from the picture. Due to different manual measurements, allow for slight size differences. Package Includes: 1 x Lens Cover Cap