Includes 2 of each: GLASS MORTAR & GLASS PESTLE Specially designed for mixing alloy with mercury Can also be used in general laboratory applications In everyday kitchen applications and much more Mortar is 1 1/4” interior diameter and 1 3/4" exterior diameter Pestle is 3 5/8" long and 1/2" in diameter at the tip. Made of high quality shock and chemical resistant glass