Product Info: Brand: KarParts360 Part: Brake Discs Position: Rear Disc Material: Cast Iron Disc Finish: Natural Disc Design: Plain Surface Disc Diameter: 12.9 inches Disc Construction: Vented Number of Lugs: 8 Notes: 4.88 inches Height; 1.5 inches nom. Thickness; 1.43 inches min. Thickness; 4.86 inches Hub Reg.; 0.