Vial & Cap Kit Includes 100 EA 300ul, Fused Insert, Screw Top, Clear RSA™ Autosampler Vials with Write on Patch and fill lines and 100 EA matching Screw Caps with Clear AQR Silicone Rubber / Clear PTFE, ultra-pure, Pre-Slit Septa, fitted in the Light Blue Caps. RSA Brand Easy Purchase Pack. 1/PK.