Product Info: Part: Brake Master Cylinder Master Cylinder Material: Aluminum Packaging Type: Box Master Cylinder Bore Diameter: 1 inches Number of Outlets: 2 Package Quantity: 1 Primary Outlet Thread Pitch: 1 millimeters Rearward Outlet Size: M10 By 1.0 Reservoir Included: Yes Secondary Outlet Thread Diameter: M10 By 1.