This kit includes: 20 mm Hand Crimper (1), 20 mL Clear Glass Crimp Top Vials (500), PTFE/Butyl (red) Septa with Pre-Assembled Aluminum Crimp Caps (100), PTFE/Silicone (white) Septa with Pre-Assembled Aluminum Crimp Caps (100), Aluminum/Silicone Septa with Pre-Assembled Aluminum Crimp Caps (100), 20 mL Clear Glass Screw Top Vials (100), PTFE/Butyl (red) Septa with Steel Magnetic Screw Caps (100), PTFE/Silicone (white) Septa with Steel Magnetic Screw Caps (100), Needle Seal Assemblies (2), O-Rings (10), Pressure Gauge with Needle for Vials (1), Static Headspace GC Theory and Practice’ book by B. Kolb and L.S. Ettre (1).