Rounded or flat bottom, Bevelled top or flat DIN Crimp Neck/Screw Neck Shop Aijiren Techbrand™ Headspace-Vial, Precision Thread, Glass at Aijiren Techsci.co.uk Aijiren Techbrand™ Headspace-Vial, Precision Thread, Glass 10mL, 46mm height, clear Aijiren Techbrand™ Headspace-Vial, Precision Thread, Glass | Aijiren Tech Scientific