Engineered to high metallurgical standards, precision balanced, and non-directional swirl finish eliminates the need for machining prior to installation. The ProStop Brake Drum and Rotor Program is the professional's choice for quality, cataloging and first to market applications. We take pride in our attention to detail and our reputation for outstanding quality. ProStop products are manufactured by ISO certified factories to meet requirements of fit, form and function. Package Weight: 26.89 lb Package Quantity: 1 UPC: 756632117677 ABS Tone Ring Included: No Center Hole Diameter: 5.09 IN Center Hole Diameter: 129.2 MM Construction: Full Cast Conventional Or Drum-In-Hat Type Rotor: Conventional Cross Drilled: No Directional or Non-Directional Brake Surface: Non-Directional Discard Thickness: 1.42 IN Discard Thickness: 36 MM Material: Cast Iron Mounting Bolt Hole Circle Diameter: 6.69 IN Mounting Bolt Hole Circle Diameter: 170 MM Mounting Bolt Hole Diameter: 0.64 IN Mounting Bolt Hole Diameter: 16.3 MM Mounting Bolt Hole Quantity: 8 Nominal Thickness: 1.5 IN Nominal Thickness: 38 MM Outside Diameter: 13.03 IN Outside Diameter: 331 MM Overall Height: 3.92 IN Overall Height: 99.5 MM Rust Resistant Coating: No Slotted: No Solid Or Vented Type Rotor: Vented Country of Origin: CN Remanufactured Part: N