Item Description, Crimp Top Headspace Vial. Material, Glass. Color, Clear. 10mL Clear, Crimp Neck Headspace Vial, ND20 Flat Bottom, 22.5 . Crimp Top 20mm Clear Type 1 Glass 10mL Headspace Autosampler Vials w/ Flat Bottom - 100/pk, CV2031. Tisch 20mm crimp top vials have a volume of 10mL and 10 mL Glass Crimp Top Headspace Vials, Level 2 High