the invention involves providing various forms of connectors attachable to a lance for detachably connecting molten metal samplers or devices thereto . more particularly , the purpose of the invention is to provide a safe and simple method whereby a cast sample for example , through use of an improved connector , may be obtained from a flowing metal stream when molten metal is being transferred by pouring from one type vessel to another . the sample may be used directly for spectographic analysis or can be drilled to provide a sample for wet chemical analysis . in addition , the sample may be sawed and polished for use in metallographic study of grain structure , cleanliness , etc . the entire sample can be cast in a two piece mold assembly or device made of a material with optimum cooling venting and dimensional characteristics .