Cast aluminum hats are available in two offsets, fit 8 bolt rotors with a 7 Inch bolt circle mount, have a 3.060 Inch diameter centering hole and fit axle flanges with up to 6.050 Inch diameter. Drilled for use with 1/2 Inch wheel studs. This hat has a 2-1/2 Inch offset and weighs 2.2 lbs.