K-resin Drosophila vials are precision moulded from pure, virtually unbreakable K-resin plastic. These narrow fly vials are conveniently pre-packed in a 10x10 tray configuration, meaning you can use them straight from the box. K-resin culture vials are perfect for shipping flies due to the strength and scratch-resistant qualities of the plastic. The straight walled shell vial design makes for easy plugging and racking providing the ultimate efficiency for your lab.