Includes Cap: Includes Septum: Pack of : C4020-139: 20mm Clear Headspace Crimp Vial, Beveled Edge, Round Base (C4020-2) Silver Pressure Release Crimp Cap, 7.5mm hole (C4020-36AP) Gray PTFE/Black Butyl Rubber, Pharmafix: 100: C4020-320: 20mm Clear Headspace Crimp Vial, Beveled Edge, Round Base (C4020-2) Silver Pressure Release Crimp Cap, 7.5mm