Spark Plug Socket: 5/8"

These header sockets are extemely high-quality professional tools that can make your life much easier. Fully CNC machined from 15-5 Stainless Steel Aircraft Alloy and properly heat-treated, these ingenious sockets will sneak into virtually any cylinder head/exhaust header combination. The internal hex is EDM'd, which means it is electronically cut and built to give a lifetime of use.