Abstract: A system for displaying a wheel that includes a shelf unit that can be mounted on the wall. The shelf unit includes a shelf upon which an inner perimeter of the wheel may be supported. The outer end of the shelf unit is reinforced against a downward force by a diagonal member from the bottom end of the shelf unit to the outer end of the shelf. A retainer clip is inserted into the shelf unit and prevents the wheel from sliding off of the shelf.

Abstract: A system for displaying a wheel that includes the shelf unit that can be mounted on the wall. The shelf unit includes a shelf upon which an inner perimeter of the wheel may be supported. A retainer clip is inserted into the shelf unit and prevents the wheel from sliding off of the shelf.

Abstract: A system for displaying a wheel that includes the shelf unit that can be mounted on the wall. The shelf unit includes a shelf upon which an inner perimeter of the wheel may be supported.

Abstract: A method and system for holding fast a workpiece using three or more jaws that are mounted on a chuck base. The chuck base includes corresponding jaw guides, which constrain the movement of a respective jaw toward the center of the workpiece. The jaws collectively move toward the center of the workpiece by tightening a gear that engages was each jaw and is included in the chuck base. Each of said jaws includes 1 or 2 two convex contact regions.