Madd Gear MGP Caliper Covers are manufactured in the USA from 6061-T6 aerospace-grade aluminum. They are TIG-welded for strength, powder-coated for durability, and include a patented stainless steel locking system. No adhesive, tape, or caliper modifications are necessary. Typical installation time is one hour from start to finish. Each setup is custom-designed for the specific vehicle application to ensure proper clearance and a secure fit. When you order a set of MGP caliper covers, you'll receive parts that were designed specifically for your vehicle. The included stainless steel locking system is also specific to your brake caliper.