ITEM NAME:Glow Plug Spark Hot Nitro Engine Traxxas OS RC For HSP 1:10th Car OZ Features: -Replace OS #8 Glow Plug -Platinum/Iridium Supper Glow plug -Longer Lasting Element -For 4c Engines -Improves Idle and transition -For 5% - 40% Nitro Fuels Suitable for All RC Vehicles With .12 to .28 Engines Heat Rating: Medium Voltage: 1.3 - 1.5V Packing: 1Pcs.Replace OS #8 Glow Plug. -For 5% - 40% Nitro Fuels. -Platinum/Iridium Supper Glow plug. Suitable for All RC Vehicles With. 12 to. 28 Engines. -For 4c Engines.