Feature:1. Suitable for car models driven by 5%40% methanol fuel oil, directly replacing damaged parts.2. Spark plug users highquality steel material, which is safe, strong and durable.3. An important accessory for methanol fuel oilpowered vehicles, providing excellent starting performance.4. Unique structure design, exquisite workmanship, easy to install and disassemble.5. Lightweight and compact, easy to start, easy to store and carry, strong practicability.Specification:Item Type: RC Spark PlugMaterial: SteelModel: 70117Color: SilverHeight: Approx. 17.2mm / 0.68inWidth: Approx. 8mm / 0.31inVoltage: 1.3-1.5VQuantity: 4Pcs (2Pcs N3, 2Pcs N4)Application: Suitable for cars driven by 5%-40% methanol fuel oilFitment: Fit for Redcat HSP Methanol Engine.Package List:2 x N3 Spark Plug2 x N4 Spark Plug4 x GasketNote:1. Please allow 0‑1 inch error due to manual measurement. Thanks for your understanding.2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.