Want to run different wheels on your import car? These 15mm wheel adapters convert your 4x100 bolt pattern to 4x114.3 (4x4.5), opening up tons of wheel options. They fit popular models like Honda Civic (1980-2007), Toyota Corolla (1989-2002), Mazda Miata (1990-2005), and many other imports. The 71mm hub bore works with most applications, and the 12x1.5 thread pitch matches factory lug specs. Besides changing bolt patterns, they also push your wheels out slightly for a more aggressive stance and improved clearance for wider tires or brake upgrades. The adapters come with thread locker pre-applied and should be torqued to 70-80 ft/lbs. The 10.9 grade studs provide the right balance of strength and flexibility for safety. Installation requires basic tools and a torque wrench - just make sure to re-torque after 50-100 miles of driving. Perfect for when you find the perfect set of wheels but they don't match your car's bolt pattern, or when you want that flush, aggressive look without permanent modifications.