Made of hardwood to enable you to shape metal without marring. Four round depressions, each with a different radius, in the diameters 3 ³⁄₄", 3 ¹⁄₄", 2 ³⁄₄", and 2 ¹⁄₂". All are ³⁄₄" deep. Overall dimensions are 8 ¹⁄₄" x 8 ¹⁄₄" x 1". Made in India.