Easy-to-fill wide-neck opening vials require 6 mm diameter micro-inserts. Save time during sample preparation and reduce the risk of contamination using Thermo Scientific 11 mm Crimp Top Clear Vial Convenience Kits (Unassembled). Each kit includes 100 clear glass vials and 100 crimp top caps with pre-assembled septa. Wide opening vials, Virtuoso™ | VWR