The short wire is double ended to offer a straight boot and a 90-degree boot on one tool.
With the engine running, the tool flashes a mirror image of the ignition spark
The additional 7" extension plug wire is used on coil on plugs that are recessed and hard to reach.
Description
Differential Covers. Drive tool between the gasket and then use a hammer from the side to separate the pan from the gasket. Blade is made from hardened carbon steel. Replacement blade available separately.