ABC modular composite connectors combine a weight-saving composite shell with mix-and-match modularity to create an interconnection system with unmatched configuration flexibility. ABC modular connectors offer two shell sizes, three insert module sizes, four contact sizes, and twenty-six keying options—yielding you over 4000 possible configurations. ABC in-line connectors are compact, single-module shells that accept any of six half-inch modules. Receptacle shells are a nonreversible stacking design and are panel mountable to a clip.