A brace or bracket for use in a saw horse together with suitable lumber, such as two-by-four's, including spaced side and end walls in a generally box-like configuration with the bottom and top open, the end walls being upwardly convergent for conforming reception within the walls of downwardly diverging legs, the side walls having aligned openings for passage therethrough of a cross member extending between the received legs. From the open upper end of the box-like structure upstand corner pieces defining therebetween notches for receiving additional cross members. The foregoing described structure is used conjointly with a similar structure and joined thereto by a selected cross member.