The Aurum PRO Banana Plugs are sold as a set of two pairs (four pieces).
These Pro Series MaxGrip banana plugs allow for an incredible wire connection and are 24k gold plating will ensure a corrosion free connection. The back shell case has a rubber grip which minimizes shorting if 2 plugs touch together. These plugs are made of high quality 24k Gold Plated H59-1 Brass. The hole diameter in the back is 6.5mm. Crimping and soldering are not required. This series of Banana Plugs work best with 10 gauge, 12 gauge, 14 gauge, 16 gauge, and 18 gauge wire.
Installing Banana Plugs:- simplicity and ease of install, No screws no solder no electrical insulation needed. See https://www.youtube.com/watch?v=cxlaFn19JiA