All Cable Housing Ferrule Pin Cord End Terminal are made of high quality copper material.silver plated,,anti-corrosion. Ferrules designed with insulation flare makes wire insertion easier and eliminates loose strands of wire, prevent wire ends from fraying or breaking. This set include 6 types wire copper crimp connectors will meet all your demands.Widely used in car audio equipment and household appliances. Cable housing ferrule wrap your wire like a glove.took the cleanliness of your installs to the . Material:copper colour:Silver Package Contents: 25 x AWG8 Terminal 25 x AWG6 Terminal 50 x AWG4 Terminal 50 x AWG2 Terminal 25 x AWG1 Terminal 15 x AWG2/0 Terminal Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.