Piggy Back "Piggy Back" connectors are more simply a "Fast Tab" connector, but with the "Female" side, it has a "Male" end attached to it. These were made so people wouldn't have to struggle with fitting two wires into one connection, or so they don't have to make another connection just for one more wire. With the same dependability as the standard fast tabs, they have many uses, and have fast become part of the solder-less connection world.

Piggy Back Push On Connector With Heat Shrink Insulation Item #: HSPB2210 Select Size & Quantity

Uninsulated Piggy Back Push On Connector Item #: NIPB2210 Select Size & Quantity

Vinyl Insulated Piggy Back Push On Connector Item #: VIPB2210 Select Size & Quantity