Material ?Stainless Steel Style ?Modern Batteries Required? ?No Package dimensions ?5.63 x 4.57 x 1.34 inches Item Weight ?13.7 ounces Absolute audio dominance for an unprecedented driving experience No Picky exhaust system applicability, almost all car models, old car modification is better Cast steel quality and all-season anti-corrosion, peace of mind for long-term use Wireless experience, customize the exhaust sound without leaving home Acoustic heart deep implantation, performance remodeling is no longer out of reach Male & Female Flange T-Bolt Design Seamless Assembly PHILTOP V Band Clamp with Flange Male Female, Stainless Steel Band Clamp Exchange Exhaust Accessories Using a self locking V-Band clamp is that these retainers are perfect for applications requiring frequent removal. and V-Clamp has a captive (non-removable) T-bolt closure. This style of clamp can develop high axial clamping force with high burst pressure capability in diesel exhaust, turbochargers and other industrial applications