Material Options: 304 Stainless Steel | 16 Gauge or Premium Grade 5052 Aluminum | 12 Gauge (compare material differences) Our Prius Gen 3 Cat Shield™ Version 2 has been redesigned and is now completely bolt-on. This shield fits all 2010-2015 Prius Liftback and Prius Plug-In Trims with OEM converters. Our V2 comes with an exhaust resonator cover for thieves that may confuse the resonator for the catalytic converter. Upgrade Option: Miller CAT Custom Screw Kit (view more) Required Tools for Installation: Protective eyewear and gloves, flat head screwdriver, 10mm socket, 12mm socket, 14mm socket, 1/4" bit driver. Note: Shield may have some surface imperfections. Professional installation recommended.