For Mazda 626/Miata/Protege/RX7/RX8 Hub Adapter+Red 2" Quick Release Hub - Made of High Quality Aluminum, Rubber and Stainless Steel / Direct Bolt-on Design Quick Release - 2.1" Thick / 3.3" Diameter / Pull Paddle Flaps / Ball Bearing Locking Mechanism Racing Style, for Most Aftermarket Racing Brand Steering Wheel Comes with Hub, Quick Release and Installation Hardware Instruction NOT Included, Professional Installer is Highly Recommended