Metra BY-HDGD gold stereo installation hardware kit. This kit includes most connectors used when adding speakers or amplifiers. Kit provides zip ties for keeping wire in place, 4 gauge and 8 gauge gold plated power wire ring terminals for connecting wire to battery , fuse holder , relay or other power or ground sources. Comes with vinyl red or black terminal cover to visual ID cable. Hardware kit comes with various sizes of female spade connectors, commonly used for speaker terminals but can also be used for various connections. Butt connectors come with kit to join wires together.