The banjo hooks hold onto the tension band. To accomodate the 24 hooks, and to increase the stability of the system, this band has 24 indentations machined into it. Note the downward angle of the indentations and how they match the angle of the hook part of the banjo hooks. This is a very stable design. The tension band's primary job is to create and maintain tension on the banjo head. Stelling Banjo Works, Ltd is located in Heards, Virginia and is owned and operated by Geoff Stelling.