The FIX-DGB-26 Grommet with Bulkhead and ØMount. Hole: 28.5mm; ØHole: 25.5mm; Rubber is a fastening product manufactured by Fix & Fasten. This part is designed for locking and securing cables, hose and wires in cars, boats, industrial machinery, household appliances, and furniture. It features a round metal disk with a rubber grommet that securely attaches through a 28.5mm hole on one side and through a 25.5mm hole on another side. This secure rubber grommet helps to prevent moisture, dust, and other contaminants from entering the system while the metal disk helps to provide a secure mounting base. The rubber material also helps to reduce vibration, making it ideal for use in vehicles and other high-vibration applications.