Will be a convenient combination to meet your DIY needs for melting, casting or refining metal, jewelry, gold, silver and other materials Nice features: these graphite casting moulds possess many nice features, are characterized by nice thermal stability, as well as fast cooling, their nice thermal conductivity properties can shorten the casting time and save energy Dimension: crucible mould measures approx.100 x 50 x 25 mm in outer diameter, 90 x 40 x 20 mm in inner diameter, each crucible stir rod is about 12 inches/ 30 cm long, 5-in-1 graphite casting ingot mould about 72 x 57 x 12 mm in outer diameter, quartz crucible approx.7 cm in diameter, 2.5 cm in height, tong about 10 inch in length, cylindrical graphite measures approx.4 cm in diameter, 4 cm in height Multipurpose: these graphite ingot moulds are widely and commonly applied for experiments and smelting of non-ferrous metals, such as gold, silver, copper, aluminum, lead and much more, also perfect for satisfying lab, test analysis and other purposes; Taking the product size into account, small-capacity metal melting projects will be more suitable Reliable to use: high-density graphite materials, bring you nice using experience, and long time for you to apply, not easy to break or deform, you can also share them with your friends or family members Colour:black Material:graphite Package Contents: 1 set * crucible 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.