ACCEL 5040K 8mm Super Stock Spiral Universal Wire Set - Black Double silicone construction around a fiberglass braid Spiral wound stainless steel alloy conductor with a fiberglass Kevlar core Withstands temperatures up to 550 degrees Fahrenheit Just 500 ohms per foot of resistance for crisper, more efficient ignition Also available blue, red, and classic ACCEL yellow, with either straight or 90 degree boots