General description High Quality: Every piece of our grommet kits is made of top rubber, soft, flexible, and has a longer service life. They offer high temperature resistance, are less affected by UV light, and are anti-aging, oil resistant, corrosion resistant, with good electrical resistance, flame retardant, and provide insulation, ensuring long-lasting and reliable service. Wide Range of Applications: Closed grommets are commonly used to protect or cover holes and to safeguard cables or wires from dust, rain, or sharp edges, protecting against fire hazards. They are suitable for wall holes, workshops, plumbing, wires, cables, firewall applications, valves, automotive uses, and electrical appliances, effectively fitting parts together for various mechanisms. Additionally, they can reduce vibration and seal important under-the-hood and body applications. Technical specifications Contents: 170 pieces in 7 sizes Sizes: 5*7 mm (50 pcs), 7*9 mm (40 pcs), 9*12 mm (30 pcs), 14*16 mm (20