NIT*0EPR  Technical Data: *4mm Thread, *7.5 mm Reach, *6mm Hex.   Iridium, Conical Flat   Description:   1) Strong resistance to heat and shock
2) Great mechanic and electronic features
3) Superb insulation
4) Nickel plated housing prevents oxidation and corrosion
5) Heat crimping process ensures absolute air-tight fit
6) Inner sealing with conductive glass ensures a fine conductivity and seal
7) Multi-layer gaskets are strong and reliable
8) Copper core electrode prevents oxidation and corrosion
9) Good electricity and heat conductivity *0) Long spark plug service life