This graphite crucible has good thermal stability, which is suitable for emergency heat or cold usage condition. Using modern processing technology to manufacture strong and sturdy. Suitable for miniature items melting. Features -Color:Black -Material:Graphite -Size:3.50X3.50X3.50cm/1.38X1.38X1.38in - This graphite crucible is designed with a cover design to effectively protect the safety. - Smelting tool is suitable for melting most metals, such as gold, , silver, copper, etc. - This graphite crucible is perfect for melting, recasting, refining, versatile, practical, professional and functional. - Rational design, graphite crucible is easy to operate. You can use our crucible for miniature items melting. -Small smelting refining crucible is with good chemical stability, have no effect on these crucibles. Package list: 5 x graphite crucible