Kit Content:6 x NGK COP Ignition Coils6 x NGK Ruthenium HX Spark PlugsItem Description:Thread Diameter(mm): (Spark Plugs) 14.00Coil Type: (Ignition Coils) COP (Coil on Plug)Center Electrode Core Material: (Spark Plugs) CopperElectrical Terminal Type: (Spark Plugs) Non-Removable NutGround Electrode Quantity: (Spark Plugs) 1Center Electrode Tip Material: (Spark Plugs) RutheniumIgnition Type: (Ignition Coils) DistributorlessPre-Gap Size(in): (Spark Plugs) .044Hex Size(in): (Spark Plugs) 5/8Mounting Bracket Included: (Ignition Coils) NoGround Electrode Tip Design: (Spark Plugs) Dual Fine Electrode - High IgnitabilitySeat Type: (Spark Plugs) TaperedManufacturer Heat Range: (Spark Plugs) 5Resistance(Ohms): (Spark Plugs) 5000Ground Configuration: (Spark Plugs) StandardInsulator Height(mm): (Spark Plugs) 52.50Ground Electrode Core Material: (Spark Plugs) NickelReach(in): (Spark Plugs) .708