This is the slick and economical solution to running cables through automotive firewalls and bulkheads. Our rubber wire grommets are universal providing enough flexibility to run cable bundles from 3/8 inch to 1 inch. This means our boot grommets are suitable for a whole range of wiring tasks on a huge of vehicles. These rubber grommets for wiring provide a safe and secure transition allowing to sit firmly in place, protected from sharp edges and additional wear. The waterproof grommet design prevents any unwanted moisture and eliminates any potential cold air leakages. Our car parts are made of the highest quality material and these waterproof grommet pass throughs are no exception. We mold these from the highest quality rubber to create a product boots. These automotive rubber grommets are so easy to install: All they require is a hole 1 1/4 inch in diameter. Cut the grommet to the desired size for the cable bundle and this grommet will firmly attach. Secure the assembly with a zip line, if desired If further wiring is necessary in , this universal power grommet allows for expansion. Just cut as required. Colour:black Material:rubber Package Contents: 4 x Universal Firewall Boot Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.