Check the listing for details. Storm Vulcan crankshaft grinder arbor hub. Condition: Used, Made in United States. Listed at 80.00 USD. This wheel hub is for Storm Vulcan crankshaft grinders models 14 and 15, this hub is used for grinding wheels with an arbor hole of three inches. Some of the later 15 machines enlarged the wheel hub, be sure of the hub size you need. The hub has been cleaned threads have all been chased no rust no marred damage the tapers in the hub they have been lapped. The adjustable weights for balancing are clean and have expandable set screws, you will need pads for the contact surface to the stones, this hub is equipped with Allen head screws. If you are mounting a very wide wheel you may have to use longer screws. I will be posting more Storm Vulcan items. If you have a question message me and check the store might be something there for you and offers are always welcome thanks MIKE