The Amphenol PT series and PT-SE series connectors (MIL-DTL-26482 Series I) feature high-density contact arrangements within a circular shell. The PT series provides solder contacts, while PT-SE offers high-performance crimp contacts, and PT-CE (not specified here) provides a commercial crimp option. These connectors utilize a quick-disconnect bayonet coupling mechanism for fast mating and unmating, and are available in various mounting styles and shell sizes.