Made of hardwood, this block is used to shape metal without marring. Each depression is 3/4" deep, with a gentle slope to each die. The diameters include: 4", 3-1/2", 3" and 2-1/2". The overall dimensions of this wood block are 8-1/2"x x8-1/4" x 7/8"D. The Mallets Measure 2 3/4 x 7 1/4 inch and 2 x 7 inch. Color of wood can vary.