HS Strut developed quite possibly the easiest-to-use box call ever created while maintaining excellent tone and sound quality. With only one striking side the open-close operation is fool proof. The off side is taller which stops the paddle in the same place every time. Like the open and closing of a door rhythm and cadence is all you need to master. Constructed of a solid billet of American Walnut with an exotic Purple Heart lid. Made in the USA.