Experiment accessory--this item is a test tube clamp, which is made of and for long-term use,test tube clip

Test tube clamp--specially designed for experimental test tube, suitable for labs experiment and experimental lesson,holder for test tube

Laboratory accessory--the test tube holder enjoys the strong durability, which is not easy to be broken and deformed,test tube parts

Test tube holder tool--a spring-action self-closing mechanism to ensure a with correct pressure,test tube holder

Metal test tube holder--this test tube clip features high durability and high reliability,laboratory equipment