Make of premium rubber materials, these cable grommets ensures tight sealing for electrical box openings. The elastic and durability rubber effectively blocks and intrusion, ideal for humid environments to prolong equipment lifespans. Designed for easy installation without tools, saving time and effort. The flexible rubber adapts quickly to various cable hole sizes (5 17mm inner diameter option), suitable for both household and industrial applications. Features excellent aging resistance with IP65 waterproof rating, maintaining shape integrity in extreme temperatures. Perfect for outdoor use or harsh conditions where long terms sealing