HOLLOW RECTANGULAR CAPILLARIES MANUFACTURED IN BOROSILICATE GLASS, ID: 0.05mm x 1.00mm, Wall thickness 0.050mm +/-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 5015-050 (5015-50), 5015-100, 5015-300, 5015-600. NOTE: Previous part numbers were W5005-050 (W5005-50), W5005-100, W5005-300, W5005-600, RT5015