Item Type: Automotive Intake Vacuum Hose Cap Material: Silicone Inner Diameter: Approx. 19mm / 0.75in Applicable to: Approx. 19mm / 0.75in universal Package List 5 x Automotive Intake Vacuum Hose Cap 1Silicone Material: This cap is made of premium silicone and can be used for a long time. Our vacuum covers are highly resistant to ozone, water, weather and extreme temperatures. 2For 19mm Tube: This cap is suitable for all 19mm automotive intake vacuum flexible pipes, BOV pipes, vent pipes, oil collection pipes, intercooler pipes or other industrial applications. 35Pcs: There are 5 pieces caps in this package that they can be used for a long time, or you can use them as backup. 4Portable: Comes with small sizes and lightweight as well, these caps can be easily carried and stored for the convenience of your work. 5Easy Installation: As long as the size is appropriate, the installation of this pipe cap can be completed quickly.