Check the listing for details. 12Pcs Rubber Grommets 12mm Drill Hole, 9mm ID Hole Top Hat Hole Plug, Gray. Condition: New. Listed at 12.22 USD. Description:1. [Material] - The grommet is made of flexible and pressure-resistant silicone rubber, high temperature and low temperature resistance, dust-proof and flame-retardant, long service life, good softness, not easy to deform and crack during use;2. [Function] - Silicone rubber gaskets are usually used to protect or cover holes and protect pipes or wires from scratches and harm from rough corners or rough surfaces, safely and effectively clamping wires;3. [Easy To Install] - Top hat hole plug grommets have straight side walls, which can easily be inserted into the holes to complete the installation. The installation is convenient and quick. Please choose the appropriate grommet according to the hole diameter before ordering;4.