Master Cylinder: Cast Iron GM Corvette Style 1 inch UniversalThis is an idea consideration for those with cramped engine bays.. where it may be easier to run the brake lines out either on the LH or RH sides.. as is some RHD converted cars with cramped engine bays. Comes with a "bullet" to allow for deep MC piston to booster pin use or short. Ports are 9 16" & 1 2" Ports on Both Sides .. big port at Rear of each side. Cast Iron Universal 1" Bore Ports are 9 16" & 1 2" Ports on Both Sides .. big port at Rear of