Wire management systems aluminum cable management brush for cabinet grommet is made of strip brush and H type dark bronze anodized aluminum holder. And the bristle material is chosen high-quality nylon. The cable management brush strip for cabinet grommet keep hot exhaust air away from cool intake air extending the life of your equipment. What's the advantage of the Bursten cable brush strip for cabinet grommet? 1. The endless option makes it easy to find a perfect fit2. Keeps your data cables together to prevent tangling and disorganization3.Ideal for mounting above any server rack or server cabinet surfaces4.Provides clean cable entry while preventing dust entry.