This package comes with 2 pairs of crimp terminals and connectors. fork terminal, superior electrical contact. Gold plated to protect against corrosion and to ensure increased power flow and the highest quality audio without distortion. 4 gauge power wire/ ground wire fork terminals. Alternative for banana plugs. Safer than connecting bare wires. Feature - Color: Red and black - Material: Copper - Size: 5/16"(about 8mm) stud ring diameter. Warm tip: The picture is for reference, and please allow 0.1-0.2 inch difference due to manual measurement.(1 inch=2.54cm) - This package comes with 2pairs of crimp terminals and connectors. 2 red boots and 2 black boots of crimpable fork terminals. - fork terminal, superior electrical contact. - Premium copper heat tested, gold plated to protect against corrosion and to ensure increased power flow and the highest quality audio without distortion. - 4 gauge power wire/ ground wire fork terminals. - Alternative for banana plugs. Safer than connecting bare wires.