Black Cable Runway Radius Drop, 6" Runway Width, 5" Product Width, 2 Cable Spools each. Mounts to the cross member of the cable runway to help maintain proper Category 5e/6/6A or fiber bend radius. Quick and easy installation. Cross member radius drop (BLRRD100-XXX) fits 6" W cross member tubing on Universal Runway (Series 250). Provides 3" bend radius.