Kit Content:1 x NGK COP Ignition Coils Multi-Pack4 x NGK Ruthenium HX Spark PlugsItem Description:Thread Diameter(mm): (Spark Plugs) 14.00Coil Type: (Ignition Coil) COP (Pencil Type)Center Electrode Core Material: (Spark Plugs) CopperGround Electrode Quantity: (Spark Plugs) 1Center Electrode Tip Material: (Spark Plugs) RutheniumElectrical Terminal Type: (Spark Plugs) Non-Removable NutGround Electrode Core Material: (Spark Plugs) CopperReach(in): (Spark Plugs) .75Insulator Height(mm): (Spark Plugs) 50.50Ground Configuration: (Spark Plugs) StandardIgnition Type: (Ignition Coil) DistributorlessHex Size(in): (Spark Plugs) 5/8Pre-Gap Size(in): (Spark Plugs) .032Resistance(Ohms): (Spark Plugs) 5000Mounting Bracket Included: (Ignition Coil) NoManufacturer Heat Range: (Spark Plugs) 7Ground Electrode Tip Design: (Spark Plugs) Projected Square Platinum Electrode - High IgnitabilitySeat Type: (Spark Plugs) Flat