HOLLOW ROUND CAPILLARIES MANUFACTURED IN CLEAR FUSED QUARTZ, ID: 0.30mm, OD: 0.40mm, Tolerances +/- 10%, Both ends open. Supplied in screw cap vials - Each vial contains 75 capillaries. Available in 100mm, 300mm and 600mm lengths. Part numbers CV3040Q-100, CV3040Q-300, CV3040Q-600.