Product Material: Rubber Product weight: 8 ounces Quantity: 2pcs Package content: 2* silencer ears 1.Package include:2pcs 4 hole rubber exhaust hangers and 2pcs O ring rubber exhaust hangers 2.Function: exhaust rubber bracket can prevent the muffler from moving freely while driving. Can reduce the amount of exhaust system movement, is ideal for lowered cars and racing cars. 3.APPLICATION:Reduce exhaust noise and reduces the height of the exhaust pipe with the car body as well as a contact surface.Better secure the exhaust and reduce vibration.The exhaust bracket reduces the height and contact area of the exhaust pipe to the body, it can effectively reduce the noise of the exhaust pipe or the noise generated by its own vibration, and create better exhaust safety. 4.INSTALLATION STEPS-First: Cutting off the rubber from the exhaust Insulator. Second:Use a wire brush to remove dirt & remnant rubber from the hangers.Third: Apply silicone Lube to the retaining ends of the exhaust hangers. Fourth: Install the new rubber mount. 5.INSTALLATION POSITION: The Exhaust isolator serves as the connecting part between the exhaust pipe bracket, muffler, and the chassis hanger. Installed in the hanging exhausts back boxes and exhaust mount.