IMO 8A Plug-in Terminal Blocks 3.81mm Pitch - IMO 21.1550M/4-E, Terminal block 4-way, free plug, 3.81mm pitch, suitable for use in a variety of PCB applications. This plug has been designed with a steel yoke to create a reliable connection suitable for use in industrial controls, information technology and other applications requiring a highly reliable interconnection with the flexibility of simplified modifications and installations. IMO 21.1550M/4-E 4 Way 8A 3.81mm Pitch Free Plug