Makes for a neat and professional appearance. Screws and terminals are Nikel plated Brass.

Such units are  widely used in military, aerospace, automotive, and robotics applications.  The current price for such newunits is much higher than the asked price, so this is a significant bargain. The metal loops are mounted on a heat-resistant material bakelite. The insulator has an integral mounting bracket  to ground them to the chassis. Prevent electrical mishaps with these quality strips. Barriers between the positions help prevent accidental contact and short circuits. These interconnects are great for all sorts of hobby projects and security alarm hookups.