HOLLOW RECTANGULAR CAPILLARIES MANUFACTURED IN BOROSILICATE GLASS, ID: 0.70mm x 7.00mm, Wall thickness 0.49mm +/-20%, ID Tolerances +/- 10%, Open both ends. Supplied in plastic vials - Each vial contains 10 capillaries. Available in 50mm, 100mm, 300mm and 600mm lengths. Part number 4707-050 (4707-50), 4707-100, 4707-300, 4707-600, RT4707.