HOLLOW RECTANGULAR CAPILLARIES MANUFACTURED IN BOROSILICATE GLASS, ID: 0.05mm x 0.50mm, Wall thickness 0.035mm +/-20%, ID Tolerances +/- 10%, Open both ends. Supplied in plastic vials - Each vial contains 25 capillaries. Available in 50mm, 100mm, 300mm and 600mm lengths. Part numbers 5005-050, (5005-50), 5005-100, 5005-300, 5005-600, RT5005.