We are offering these Brand New GLS Audio Safe-Connect Series Gold Spade Plug Connectors at an awesome savings. They feature the Sure-Grip technology which allows for an incredible wire connection. They Anti-Slip Grooves on both sides for maximum conductivity. The back shell case has a rubber grip which minimizes shorting if 2 plugs touch together. These GLS Audio Safe-Connect Series Spade Plugswork best with 10 gauge, 12 gauge, 14 gauge, 16 gauge, and 18 gauge wire. These plugs are made of high quality "H59-1 Brass" which is gold plated. The hole diameter in the back is 6.5mm. No soldering and no crimping required!