11/16" (18mm) deep well socket
NGK Plug DPR8EA9
Spark plugs use SAE and not Metric. The one that fits it is the one that fits it.
18MM
5/8"
Get a spark plug socket and wrench that fits the plug body and remove it by turning counter-clockwise.
18 mm
The BPR6ES spark plug typically requires a 5/8-inch (16mm) socket for installation and removal. This size is standard for many automotive spark plugs. Ensure you have a spark plug socket with a rubber insert or magnet to help secure the plug during installation.
The CR9EH-9 spark plug needs a 16mm or 5/8" socket.
dpr8ea9 is a resistor plug dp8ean is non resistor.
A spark plug BPR5ES typically requires a 5/8-inch (16mm) spark plug socket for installation and removal. It's important to use a socket that has a rubber or foam insert to grip the spark plug securely and prevent damage during handling. Always ensure the wrench is compatible with your specific vehicle's spark plug access space.
most 50cc 4 stroke takes 5/8
18 mm spark plug socket