Material Options: 304 Stainless Steel 12 and 16 Gauge or Premium Grade 5052 Aluminum (compare material differences [https://catshield.com/blogs/news/304-stainless-vs-aluminum]) Compatibility: Works on auto or manual transmission and is compatible with TRD/Off-Road Skid Plates. Our shield will not work with Lift Kits that modify the chassis crossmember! Our Tacoma shields are designed with the assumption that your vehicle has a Radiator Support Splash Shield installed (Toyota Part Number 51406-04020). Required Tools for Installation: Protective eyewear and gloves, 1/4" bit driver, 12mm socket Note: Shield may have some surface imperfections. Professional installation recommended.