The plug wire has a copper alloy conducter that is a much better conducter than stainless steel that some other plug wires use. Sleeve of the plug wire is made from silicone and synthetic material giving it resistance to heat, cleaners, and cuts. The plug wire is great to have in case of a fire, worn out ones, or one of the other little problems that can occur at the track.
Each plug wire kits includes eight wires with a 90 degree end for the cap, and eight plug wire ends that can be straight up out of the valve cover or run thru the supplied 90 degree boot, screws, plug wire numbers, and terminal ends.
Plug wire kits are sold in red and black but can be bought in all black for an additional charge.