Small Crucible size:60mm*22mm(approx)<br />Large Crucible size:70mm*22mm(approx)<br />Choice the fused silica as the main raw material， made using modern ceramic processing technology， mainly used in dental alloys， platinum， gold，silver，copper brass and other high temperature melting alloys， high temperature over 2800 degrees， high purity， corrosion resistance， high strength， high heat resistant， high shock resistance.<br /><br />Borax--30g(approx)<br />For percussion welding，metal test，is a good flux.Be widelt used in glass，ceramics，medicine，fertilizer， textile industry.<br />Borax is the basic raw materials of boron compounds， almost all of the boron compound can be made by borax.<br />Has an important and wide range of uses in metallurgy， iron and steel， hinery， military industry， cutting tools， paper making， electronic tube， chemical textile，etc...<br /><br />Package Included:<br />2 x Crucible<br />1 x Tongs<br />1 x Borax<br /><br />Note:<br />Manual measuring， please allow 1 ~ 3 cm error，thank you.