Brand: Baer Disc Brake Systems Manufacturer's Part Number: 2000009 Part Type: Wheel Spacers Product Line: Baer Brakes Wheel Spacers Summit Racing Part Number: BAE-2000009 UPC: 00844165004691 Thickness (in.): 0.375 in. Thickness (mm): 9.53mm Center Bore Diameter (in.): 2.80 Center Bore Diameter (mm): 71.12mm Lug Nuts Included: No Lug Bolts Included: No Wheel Studs Included: No Wheel Spacer Material: Billet aluminum Quantity: Sold as a pair. Notes: Installation may require longer wheel studs. 9/16 in. holes. Baer Brakes Wheel Spacers Baer wheel spacers are great tools to get a desired brake system to fit inside a wheel. They are fully machined in-house from US sourced 6061 T-6 aluminum to ensure they are flat and true to form (1/8 in. thick spacers are zinc plated steel). They are available in a wide variety of bolt patterns and sizes to ensure the perfect fitment for your application. When stance is everything， Baer wheels spacers should be your only choice.Additional features and benefits:* Improved appearance* Widen track* Increased brake clearance