General description This universal firewall boot is a slick and economical solution for running cables through automotive firewalls and bulkheads. Made from high-quality rubber, these grommets provide a safe and secure transition for wire bundles ranging from 3/8 inch to 1 inch, making them suitable for a wide variety of vehicles. The waterproof design prevents unwanted moisture and eliminates potential cold air leakages, ensuring durability and reliability. Technical specifications Material: Rubber Color: Black Diameter of hole required: 1 1/4 inch Wire bundle size: 3/8 inch to 1 inch Measurement allowed error: +/- 1-3 cm Installation Requires a hole of 1 1/4 inch in diameter. Cut the grommet to the desired size for the cable bundle. Secure the assembly with a zip tie if desired. Usage Ideal for running wire bundles through automotive firewalls and bulkheads. Allows for expansion by cutting as required for further wiring. Other information Package Contents: 4 x Universal Firewall