Lab Iron Ring Stand Laboratory Support Jackscrew 63mm 75mm 100mmSpecifications:Material: metal&plasticColor: black&blueSize: L: length 20cm\/7.87inch、 diameter 8.8cm\/3.46inchM: length 19cm\/7.48inch、 diameter 6.8cm\/2.67inchS: length 18cm7.08inch、 diameter 4.8cm\/1.88inchApplication: it is suitable for the use of schools、 factories、 scientificresearch units、 families、 hospitals、 laboratories、 laboratory.Features:The iron Ring Stand for fixing and supporting a variety of instrumentsCommonly used in filtration、 heating experiment.One of the most widely used instruments in experiments.Used in conjunction with alcohol lamp.Simple apparatus for laboratory chemical reactions.Rear right angle clamp can hold a maximum diameter of 18mm cylindrical objectPackage included:3 x iron Ring Stands