●Universal: For cars with 8mm, 9mm and 10mm spark plug wires ●Function:Wire separators made of aluminum,Fixed and organized the engine wires perfectly .makes sprak plugs wire and the engine bay look neat. ●Convenient to Use:With Allen wrench to make it easier to detach and reattach the spark plug wire separator, making it easier to fix and install the spark plug wires. ●Quality Material:Spark plug splitter is made of aluminum, which is better quality than the plastic splitter. ●Includes:4pc Long Wire Separators (4 hole)/8pc Short Wire Separators (2 hole)/4pc Allen Key