ECO 13.5" Crucible Tongs for Graphite Furnace Crucibles For Melting Casting Refining Gold Silver Copper 13.5" Long ECO Crucible Tongs Does not include graphite crucible Works great with grooved electric furnace graphite crucibles. Designed with heat resistant handles. Holds up to 3" Diameter crucibles. Handles 1kg, 2kg and 3kg graphite crucibles