Material: Our rubber grommets are made of rubber and offer excellent flexibility, strong insulation protection, and aging resistance. These rubber cable grommets are dustproof, insulated, and flame retardant, effectively protecting wires or other materials from damage caused by metal friction. Wide Size Selection and Usability: Our set of 200 rubber cable grommets includes a wide range of sizes: 7mm x 80pcs, 9mm x 40pcs, 12mm x 30pcs, 16mm x 20pcs, 20mm x 10pcs, 22mm x 10pcs, and 25mm x 10pcs. Whether you're working on a small DIY project or a large-scale industrial application, you'll find the right size rubber cable grommets in our set. Easy Installation and Use: These rubber cable grommets are easy to install. You can insert them on just one side, without having to attach a lock nut on the other side. After installation, the opening remains closed until the membrane is pushed out. Versatile Uses: Rubber grommets can protect or cover holes and protect cables or wires from sharp corners or edges. Whether you're working on automotive projects, electrical work around the house, or even DIY home repairs, these grommets are an indispensable tool. They're also ideal for preventing metal-to-metal contact, protecting wiring and cables running through bulkheads, metal panels, and so on.