This kit includes the following: (1) 20 mm Hand Crimper. (500) 20 mL Clear Glass Crimp Top Vials. (100) 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.