Name: High Performance Auto Spark Plug Three Electrodes For BKUR6ET-10Thread size:14mmThread Pitch:1.25 mmSeat Type:GasketResistor:YesReach:19mmHex Size:16mmIgnition Position:2.5 mmGap:1.0 mmCenter electrode: Nickel -tipped ElectrodeGround electrode: Nickel -tipped Electrode