The Optronics 4/5-Way Trailer Harness Plug Protector secures and protects trailer harness plugs from damage, corrosion, and debris. This easy-to-mount plug protector helps maintain your electrical system's reliability.• Protects plug from dirt, debris, corrosion, abrasion, and impact• Helps maintain electrical system reliability• Easy, surface-mount installation• Corrosion-proof design• 3-year warranty Helps maintain your electrical system reliability Corrosion-proof design