Thank you for coming to our shop, I hope it is to your satisfaction Item Name: Crankset Dust Cover Features: High Strength, Good Toughness, Wear Resistant Size Details: Inner Diameter: 1.98cm/0.78" (Approx.) Outer Diameter: 2.59cm/1.02" (Approx.) Specifications: Since it is designed with anodizing and flower, it brings bright color and good decoration effect. Featuring rubber ring, it ensures excellent sealing effect, dust and water resistance. It is constructed of aluminum alloy material. It is suitable for bikes. What makes it lightweight while ensuring high strength, high hardness and corrosion resistance is the aluminum alloy structure design. The inner diameter is 1.98cm, the outer diameter is 2.59cm. Kindly Remind: Due to light and display, there may be slight differences between the picture and the actual color of the product. The color is subject to the goods received. In addition, please allow slight size difference due to manual measurement. High quality, assured choice is guaranteed Package Includes: 1 x Crankset Dust Cover 1 x 18mm Rubber Ring 1 x 20mm Rubber Ring