A tool display member includes a board and two side pieces are connected to a first side of the board. A gap is defined between the two side pieces and each side piece has an opening defined in an inside thereof. A protrusion extends from an inside of each of the opening and includes a stepped edge so...http://www.google.fr/patents/US6883664?utm_source=gb-gplus-shareBrevet US6883664 - Tool display member