Durable Forged Steel Construction: Made from heat-treated forged steel, ensuring ultimate strength and durability while retaining stock factory geometry and ride height. Versatile Rotor Compatibility: Compatible with a variety of rotor sizes including 9-1/2 , 10 , 10-1/2 , and 11 , making these spindles adaptable for numerous applications. Broad Compatibility with Brake Systems: Designed to work seamlessly with Compatible with Ford Compatible with Mustang II, Full-Size GM, GM Metric, and Wilwood calipers, offering extensive flexibility for brake upgrades. Multiple Hub/Rotor Bolt Patterns: Available in hub/rotor bolt patterns of 5 on 4-1/2 , 5 on 4-3/4 , and 5 on 5 , catering to a range of vehicle specifications and requirements. Stock Suspension Geometry Preservation: Direct replacement for stock Compatible with Mustang II/Pinto and Compatible with Mustang II suspension kits, maintaining original ride height and suspension geometry, sold as a pair for complete fitment. ASIN B01N9VS0FX Brand Speedway Motors Model Speedway Motors Exterior Natural Position Center Item Weight 17 pounds Manufacturer Speedway Motors Item model number 91034307 Product Dimensions 12 x 10 x 10 inches Manufacturer Part Number 91034307