HOLLOW ROUND CAPILLARIES MANUFACTURED IN BOROSILICATE GLASS, ID: 1.00mm, OD: 1.20mm, Tolerances +/- 10%, Both ends open. Supplied in screw cap vials - Each vial contains 25 capillaries. Available in 100mm, 300mm and 600mm lengths. Part numbers CV1012-100, Cv1012-300, CV1012-600.