Kimax Gas Measuring Tube, Material: High quality borosilicate glass, The top is closed with the tube graduated from the top down, Dimension: 50 x 0.1 mL
Y-Shaped Flint Glass Connecting Tube, Arm Length: 1 1/2in, with a 120 deg angle provides safer connections as the ends have constrictions to hold rubber tubing securely, Made from quality flint glass, Size: 1/4in ID X 5/16in OD (7.9mm)
Flint Standard Wall Glass Tubing, Machine-made tubing is designed from a formula that combines all the properties necessary for easy bending and blowing work, Lead and Potash-Free, Uniform Diameter and Wall Thickness, Dimension: 0.7 x 122 cm