This rubber grommet is an essential component for any cable management system, providing protection and durability. The 5.2 mm central hole is ideal for threading cables through metal posts, preventing abrasion and damage. Its design ensures that cables remain intact and functional, making it a reliable choice for both indoor and outdoor applications. Features -Color:Black -Material:Rubber -Size:1.67X1.67X1.03cm/0.66X0.66X0.40in -prevention: effectively prevents from entering metal posts, protecting against water and extending the railing system -Cable protection: prevents cables from abrasion against metal or composite posts, ensuring durability -Electrolytic minimization: reduces direct friction between different metals, minimizing electrolytic reactions and preserving your railing system -Durable rubber: constructed from sturdy rubber, these grommets are built to withstand harsh weather and uv exposure -Simple installation: easy to install without the need for complex tools or steps, saving time and effort during setup Package list: 100 Grommets