SPARK PLUG Sparkplugspecification A7TC:SizeM10X1.25mm SUITCAR:110 1.Reach:12.7mm2.Hex:16mm3.Gap:0.7mm 4.ThreadDiameter:14mm5.Seat:Gasket6.Terminal:Removable A7TC:CanUsedToReplacementNGKC7HSA.BOSCHX5.CHAMPIONZ9Yetc. 1)..Multi-ribsdesignedontheinsulatorcaneasilyeliminateflashover 2)..Insulatormadeof95%purealumina,strongresistanceofheatshock,greatmechanicalandelectricalfeatures,superinsulation 3)..Nickelplatedhousingpreventsoxidationandcorrosion,heatcrimpingprocessensuresabsolutegas-tightfit 4)..Innersealingwithconductiveglassensuresafineconductivityandsealing 5)..Multi-layergasketareelasticlystrong,andreliableinsealing 6)..Coppercoreelectrodepreventsoxidationandcorrosion,goodelectricand heatconductivity,longservicelife. 7)we also have D8TC ,E7TC and can make according with samples package picture