Size: the outer size of the 1 kg graphite ingot mold is 100 x 50 x 25 mm/ 3.94 x 1.97 x 0.98 inches, and the inner size is 90 x 40 x 20 mm/ 3.54 x 1.57 x 0.79 inches, for 1000 g gold/ 535 g silver; The outer size of the 665 g graphite ingot mold is 100 x 30 x 30 mm/ 3.94 x 1.18 x 1.18 inches, and the inner size is 90 x 18 x 22 mm/ 3.54 x 0.71 x 0.87 inches for 665 g gold/ 315 g silver; Please check the size before buyingDurable to: our crucible molds are made of quality graphite, with good thermal conductivity, which can shorten the melting time and save energy, withstand 2000 degrees Celsius, resistant to corrosion and compression, flexible and durable, not easy to break or deform, can serve you for a long timePackage content: the package contains 2 pieces of graphite ingot molds, they are 1 kg graphite ingot mold and 665 g graphite ingot mold, practical and useful in multiple melting applications, helping you finish various craft makingWide range of applications: the casting mold is applicable for melting and casting materials, such as gold, silver, aluminum, copper and other metal materials, also suitable as a graphite crucible for experimental analysis gifts: you can prepare this crucible graphite mold for your own crafts, or you can also send to your , relatives, colleagues, classmates and neighbors as delicate gifts, bringing much convenience and enhancing your relationshipsColor: blackMaterial: graphitePackage Contents:2 * Graphite Ingot MoldOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.