NO DRILLING REQUIRED Front mudflap kit designed to fit 2019 and newer Chevrolet Silverado 4500, 5500, 6500 and 2019 and newer Interational CV trucks. Fits models with steel or aluminum steps and 4x2 and 4x4 models. Made with 10-gauge stainless steel and includes all stainless hardware. Designed and manufactured in the USA. Competitors kits require drilling and riveting into the trucks steel rocker panel creating the potential for rust. Please message us to verify if your truck is 2-wheel drive or 4-wheel drive.