RT438-20 - 20pcs 4awg Copper Ring Terminals, 3/8” Ring Hole, Shiny Nickel Plated Crimp Ring Terminals with 20pcs Red & Black Soft Boots

The RT438-20 is a 20-piece set of 4AWG copper ring terminals designed for reliable power connections in car audio and vehicle electronics installations. The 3/8" (M10) ring hole fits standard battery posts, distribution blocks, and grounding points. Each terminal is shiny nickel plated for corrosion resistance and includes a matching soft PVC boot for a clean, protected finish.

• Wire Gauge: 4AWG — suited for high-current car audio power and ground runs
• Ring Hole Size: 3/8" (M10) for compatibility with standard battery terminals and bus bars
• Material: Solid copper construction for maximum conductivity
• Finish: Shiny nickel plating for corrosion and oxidation resistance
• Insulation: 20 soft PVC boots included — 10 red, 10 black — for polarity identification
• Quantity: 20 terminals per bag — enough for a complete amplifier install or full system build