The wooden shelf support, made of resistant gray plastic, is a piece whose primary function is to join and hold shelf boards in order to provide an invisible, safe, and durable joint. In its circular shape, there is a frontal slit internally provided with two flaps which will be the support of the steel bolt called “Nickel-plated steel wooden shelf support” from the same collection. This plastic support is installed on the board and is then joined with the previously installed steel support through a lock that allows a firm hold. The packaging contains 5,000 units.