Store Name: Chong Qing Shuo Yue Ke Ji You Xian Gong Si Heat the Quartz Ceramic Crucible Bowl slowly and make sure to glaze the bowl with borax before use. The bowls are professional for metal melting, trusted by many jewelry makers, the quality is sufficient for use Ceramic Quartz Crucible Bowl is 99.99% high purity, corrosion resistance, made of durable quartz, with strong thermal conductivity, chemical resistance and high temperature resistance, can withstand 2800 degrees temperature. The handle gives you a comfortable grip while using it, protecting your hand Professional melting ceramic crucible bowl set for jewelry melting tools also good for burner applications gold, brass, bronze, silver, copper melting alloys. It is also useful for jewelers, metal workers/blacksmiths/chemical refiners. 4pcs Quartz Crucible Dish Cup Bowls for Jewelry Silver Gold Casting Melting Refining with Pour Spout (about 100g capacity), One 304 Stainless Steel Whipping Tongs Handle 2A Color: white+silver Material: quartz+metal Package Contents: 4 x Quartz Crucible Dish Cup Bowls (100G) 1 x Crucible Tongs The above package content only, other products are not included. Note: Light reflection 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 +/- 1-3 cm.