This spot on the tension band is where the neck joins the banjo pot. The tension band is cut this way to accomodate the strings. The tension band's primary job is to create and maintain tension on the banjo head. This is done in conjunction with the hooks and flange. The banjo hooks hold onto the tension band on one end, and are affixed to the flange on the other end. To accomodate the 24 hooks, and to increase the stability of the system, this band has 24 indentations machined into it. This is a very stable design. Recording King is a brand of instrument currently owned by The Music Link Corporation and is located in Hayward California. The brand was originally a house brand of instruments made for the Montgomery Ward company.