These are the same high-quality grommets we use in our high-end builds along with our custom amplifier wiring kits we manufacture. Made from high-quality nylon PA66 material, effectively resistant to UV, providing long-time protection for your applications. IP68 waterproof rating, better protecting your electrical equipment from moisture, water, and common solvency. Simple steps to install. Cables can be inserted directly then tighten easily. There is no need for disassembly.
8-Gauge Cable Range: 3-6.5mm (0.12-0.26inch)
4-Gauge Cable Range: 5-10mm (0.20-0.39inches)
1/0-Gauge Cable Range: 13-18mm /0.51-0.71inches