Hub is made from billet steel with two .250" keyways 180 degrees apart. Hub has the industry standard 2.00" register with six 3/8" bolt holes on a 2.782" bolt circle. Hub has some galling in the bore and the hub and gear surface. Hub measures from pulley mounting surface to crank gear surface 1.125". Hub is designed for 1.530" diameter Hemi crankshafts.
Buyer could machine off gallded area and run the hub if they choose but RBS feels it is best used as a display part.
Note: This is a used item. This item might have been taken in on a trade. RBS may have inspected this item and deemed re-usable. There is no warranty expressed or implied with this item.