For the 1940 Oldsmobile Series 60 car, these rear bumper arm grommets measure 3" wide by 5-5/16" long, with a 1-3/4" long inner slot, ensuring a precise fit for your classic vehicle. Designed to provide a secure and snug connection for the rear bumper arms, these grommets are crafted from high-quality materials that offer longer-lasting elasticity and durability compared to artificial rubber alternatives. Made in the U.S.A., they are built to withstand wear and tear, keeping your bumper securely in place while maintaining the car's original look. Backed by Metro’s Platinum Warranty, these grommets are protected for a full 30 years, giving you peace of mind with your purchase.