Check the listing for details. 3.1" Rubber Grommet Kit, 4Pcs Firewall Closed Hole Plug Fire Grommet, Black. Condition: New, Made in China. Listed at 19.28 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: 80mm / 3.1";Inside Diameter: 70mm / 2.8";Outside Diameter: 90mm / 3.5";Overall Height: 10mm / 0.4";Grove Thickness: 3mm / 0.1"Packing List: 4 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.