They are  known as the cable wall grommet  are used to seal the wall entry openings and protect cable wire from damage when they pass through the openings drilled in the wall where the cable line is running. They supply with the protection funciton of  weather proof, UV resistant and provide a water tight seal indoor and outdoor. They are  constructed by the high quality plastic materials which  provides a durable solution to running the cable wire through the wall. 

    We supply these dual coaxial feed through wall bushings which cover holes and weatherproof wall penetrations. meantime, the wall bushings ensure the cable line is not pinched or kinked when installation. The  dual to quad shields beveled design ensure firmly fit stabley and seals wall opening to prevent water migration damage free design ensure and protect  cable line through wall entry and provide clean installations sealing roughly drilled hole.

   They are widely used in the cable installation industry project field. Dual Cable Wall Bushing in clear with inner hole diameter 14.0 X 6.5 mm X Cap Diameter 43 mm X 35 mm Length. The white, black color,the different sizes and styles are available as customers' needings. 

   To pass the dual coaxial cable through the drilled hole in the wallsafety to protect cable wire surface. The 4 row inverted gear teeth (Pawl) have a good function to prevent bushing sliding off the hole in the wall,used together the silicone to prevent moisture penetration into the cable wire line through the drilled hole in wall and make the wall look smooth after cable installation.