This dimmer switch grommet is designed for vehicles with a 2-1/2" flange and a 1" inner diameter, making it a perfect fit for your dimmer switch setup. Crafted from durable yellow rubber, it features a flange that secures easily into your carpet or floor mat, ensuring a snug and reliable fit. Built with state-of-the-art rubber compounds, this grommet is resistant to chemicals, sunlight, and ozone, providing long-lasting performance and protection. Its bright yellow color adds a clean, finished look to your vehicle's interior while keeping your dimmer switch area protected and tidy. Backed by Metro's 30-year Platinum Warranty, you can trust this part to deliver dependable quality for decades.