Feature●Glass capillary tubes. Pack of 500.●Out diameter (OD) 1.1-1.4 mm, inner diameter (ID) 0.9-1.1 mm. Length 100 mm.●Both ends open. Borosilicate glass.Description Glass capillary tubes. Pack of 500. Out diameter (OD) 1.1-1.4 mm, inner diameter (ID) 0.9-1.1 mm. Length 100 mm. Both ends open. Borosilicate glass.