2 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 inch for 665 g gold/ 315 g silver; Please check the size before buying Durable to use: our crucible moulds are made of quality graphite, with good thermal conductivity, which can well shorten the melting time and save energy, can withstand 2000 degree Celsius, resistant to corrosion and compression, flexible and durable, not easy to break or deform, can you for long time Package contents: the package comes with 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 usages, helping you finish different handicrafts making Wide range of applications: the casting mold is applicable for melting and casting most materials, such as gold, silver, aluminum, copper, zinc and other metal materials, also suitable as a graphite crucible for experimental analysis Nice gifts: you can prepare this crucible graphite mold for your own craft use, or you can also send to your friends, relatives, colleagues, classmates and neighbors as delicate gifts, bringing much convenience to them and improving your relations Colour:black Material:graphite Package Contents: 2 * Graphite Ingot Mold Only 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.