Drag Specialties Spark Plugs - E18-6656IDS
Iridium electrode is smaller than a standard electrode which requires less voltage
Hotter spark and extended spark plug service life compared to conventional plugs
Has the distinctive black ceramic with red lettering and gold-colored corrosion-protected coating on the metal shell
Exceeds OEM specifications for plug service life

Included Items:
(2) Spark plugs
No instructions

Dimensions:
Resistor type
5/8” Hex
11/16” Reach
12mm Thread diameter
Projecting insulator type
Solid/Fixed terminal nut

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https://www.ebay.com/itm/287173887071