Each Oak Leaves and Acorns mold forms two different size leaves and two acorns. On the mold's reverse side is a undulating slumping surface. Finished castings can placed on this surface and refired at a lower temperature to add subtle curves to the leaves. This imbues the object with a lifelike shape. Fill weight: 15 and 27 grams (leaves) and 7 grams (acorns).63mm & 76mm (2.5" & 3") for leaves. 25mm (1") for acorns