ACCEL 172074K 8.8mm Black Custom Fit Spark Plug Wire Set Ready to install with high capacity spiral core conductors fiberglass braid covers and extra thick silicone jackets Plug boots are made from high dielectric strength silicone and have factory installed positive locking stainless steel terminals High conductivity brass terminals on the coil end Ideal for 1977 Touring Bikes 1978 Cafe Racers and 1978 Sportster 1000s Comes complete with a hardware kit and easy to follow instructions