2 Size : the outer size of the 1 kg 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 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 buying Durable to use: crucible moulds are made of quality , with good thermal conductivity, which can 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 ingot molds, they are 1 kg ingot mold and 665 g 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 crucible for experimental gifts: you can prepare this crucible mold for your own craft use, or you can also send to your , relatives, colleagues, classmates and neighbors as delicate gifts, bringing much to and improving your relations Colour:black Material: Package Contents: 2 * Ingot Mold Only the above package content, other are not included. Note: Light and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.