Description:-Easy to use: The White plug hole cover are very easy to install and don't require any professional knowledge and skills. Just gently insert it into the desired hole or pipe by hand.-High Stability: While the White silicone plug hole are very easy to install, they can also be adjusted with tools to ensure a tighter fit, increasing their firmness and durability.-Notes:All dimensions are measured manually and there may be small deviations.Feature:Material: Silicone rubberOuter Diameter: 14mm/0.55"Inner Diameter: 10mm/0.39"Height: 11mm/0.43"Temperature Resistant from -40℃ to 250℃Package Content:30 x Rubber Hole Plugs