Description: This silencer muffler insert is made of stainless steel material, which is of high hardness. So it is very durable. It can effectively reduce noise, on the other hand, it can also reduce noise contamination, which is environmental friendly. Don't hesitate, such an environmental friendly and convenient product, you shouldn't miss it. Features: 1. Universal removable muffler silencer. 2. Can effectively reduce deep note sound, also reduce noise contamination. 3. Stainless steel construction, very durable. 4. Easy installation, don't need screws, adjustable and removable. 5. Fit for the 51mm diameter size tail exhaust pipe. Specifications: Material: Stainless steel Color: Silver Size: 3.9 x 8.2cm / 1.54" x 3.23" Outside Diameter:51mm / 2" Package Weight: 97g Package Included: 1 x Silencer Note: 1. Please allow 1-3cm error due to manual measurement. Thanks for your understanding. 2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.