HOLLOW RECTANGULAR CAPILLARIES MANUFACTURED IN BOROSILICATE GLASS, ID: 0.01mm x 0.10mm, Wall thickness 0.007mm +/-20%, ID Tolerance +/- 10%, Both ends open. Supplied in plastic vials - Each vial contains 25 capillaries. Available in 50mm and 100mm lengths. Part numbers 5001-050 (5001-50), 5001-100.