Features: 1.Universal removable muffler silencer 2.Can effectively reduce deep note sound, also reduce noise contamination 3.Easy installation, adjustable and removable 4.Metal construction, very durable 5.Fit for the tail exhaust pipe diameter size of 35mm / 42mm / 45mm Specification: Description: _x000D_ This silencer muffler insert is made of iron 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. These items fit for the tail exhaust pipe diameter size of 35mm / 42mm / 45mm, and there are three diameter measures for you to choose. You can choose the proper one. Don't hesitate, such an environmental friendly and convenient product, you shouldn't miss it. _x000D_ _x000D_ _x000D_ Features:_x000D_ 1. Universal removable muffler silencer._x000D_ _x000D_ 2. Can effectively reduce deep note sound, also reduce noise contamination. _x000D_ 3. Metal construction, very durable._x000D_ _x000D_ 4. Easy installation, adjustable and removable._x000D_ _x000D_ 5. Fit for the tail exhaust pipe diameter size of 35mm / 42mm / 45mm. _x000D_ _x000D_ _x000D_ Specifications: _x000D_ Color: Silver_x000D_ _x000D_ Material: Metal _x000D_ Package Weight: Approx. 112g_x000D_ _x000D_ Optional Base Diameter (millimeter): 35mm / 42mm / 45mm_x000D_ Optional Diameter (inch): 1.38" / 1.65" / 1.77"_x000D_ Whole Length: Approx. 135mm / 5.31"_x000D_ Thread Size: Approx. 6mm / 0.24"_x000D_ _x000D_ _x000D_ _x000D_ Package Included: _x000D_ 1 x Silencer_x000D_ _x000D_ _x000D_ _x000D_ Note: _x000D_ 1. Please allow 1-3mm error due to manual measurement. Thanks for your understanding. _x000D_ 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._x000D_ 3. No instructions included. Professional installation is highly recommended._x000D_ 4. Please check the size measurement chart carefully before making payment. PackageList: