Kit Includes: 1) 26 inch large flask tongs for handling graphite crucibles. The tongs opening ranges from 3 1/8 inch to 5 7/8 inch. Great for handling hot molten metals to and from furnace. 2) These can be used with our propane melting furnaces as well as a standard torch method .Outside Dimensions - Outer: 5-1/4" Height x 4-3/4" Diameter, Inner: 4-3/4" Depth x 3-3/4" Diameter. Designed for Melting Gold, Silver, Copper, Brass, Aluminum, and more. Can take temps up to 2900 degrees.