Product Name: Silicone Rubber Round End CapsMaterial: Silicone RubberColor: Black, whiteSize Dimensions: inside diameter 3-60.5mmProduct Features: Silicone rubber is a tender and elastic material with good sealing type, high temperature resistance, anti-aging, acid and alkali corrosion resistance.Package Included: 1/2/4/8pcs * According in your choice.Warm tips:1. The precise color of the thing might be slightly various from the pictures due to the camera and lightweight effect. The picture’s colours are for reference only, area to specific kind.2. There might be 0-0.3mm error for its thickness, 0-3mm error for its width/ length/diameter in the manual measurement, please take it into consideration, thank you!