Check the listing for details. 0.9" Rubber Grommet Kit, 20Pcs Firewall Closed Hole Plug Fire Grommet, Black. Condition: New. Listed at 11.13 USD. Rubber plug hole grommet kits provide multi-faceted protection for your wire and cable systems. They effectively prevent abrasion and damage from sharp metal edges while also creating a durable barrier against dust, moisture, and other harmful environmental elements, ensuring long-term reliability.SpecificationColor: BlackMaterial: RubberDrill Hole: 22mm / 0.9";Inside Diameter: 18mm / 0.7";Outside Diameter: 28mm / 1.1";Overall Height: 9mm / 0.4";Grove Thickness: 2mm / 0.1"Packing List: 20 x Rubber Grommet KitAdvantageRubber grommet kits are made of rubber material with strong flexibility and resistance to folding, abrasion, pressure, and high temperatures. They are also aging-resistant, long-lasting, and safe with an exquisite appearance.