Sparkplug ignition

[rna_duelers]

Just wondering if anyone could tell me the tap size for a 125cc lawnmover sparklpug i plan to use it on my hybrid.Any help would be good.
thanks.

EDIT:Thanks guys i'll try the autoparts store,and i should have pics of my hybrid in around 2 weeks or so when i can get my hands on a camera.

[spudshot]

they're usually 12mm something or another, i dont remember the exact name, but its not a normal size, go to an auto parts store and ask around, they might only have ones for car sparkplugs, but the plug should only cost you a few bucks

[jrrdw]

It depends on if it has over head valves or not, i sagest a Champion CJ7Y, they are for weedeaters/chainsaws, small but make a hot spark, set your plug gap at .35, that will make a good spark under compression.