Feature：Easy installation and replacement.Colored PVC boots for easy polarity identification.From design, engineering and construction, crimp ring terminals are built not only to look good but to maximize the performance of audio system.Easily connect your battery to your system's amplifier with these terminals.Specification:Condition: Brand NewMaterial:PVC, MetalColor:Black, Red, Gold ToneWire Input: 3/16" (Accepts True 8 Gauge Wire)Ring Size: 21/64" (8.4mm)Note:Please allow 1-2mm error due to manual measurement.Package Include:10 x Red Positive (+) Crimp Terminals10 x Black Negative (-) Crimp Terminals.