HOLLOW RECTANGULAR CAPILLARIES MANUFACTURED IN BOROSILICATE GLASS, ID: 0.02mm x 0.20mm, Wall thickness 0.014mm +/-20%, ID Tolerances +/- 10%, Both ends open. Supplied in plastic vials - Each vial contains 25 capillaries. Available in 50mm, 100mm, 300mm and 600mm lengths. Part numbers 5002-050 (5002-50), 5002-100, 5002-300, 5002-600, RT5002.