Feature: 1. Suitable for car models driven by 5%‑40% methanol fuel oil, directly replacing damaged parts. 2. Spark plug users high‑quality steel material, which is safe, strong and durable. 3. An important accessory for methanol fuel oil‑powered 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 Plug Material: Steel Model: 70117 Color: Silver Height: Approx. 17.2mm / 0.68in Width: Approx. 8mm / 0.31in Voltage: 1.3-1.5V Quantity: 4Pcs (2Pcs N3, 2Pcs N4) Application: Suitable for cars driven by 5%-40% methanol fuel oil Fitment: Fit for Redcat HSP Methanol Engine . Package List: 2 x N3 Spark Plug2 x N4 Spark Plug4 x Gasket Note: 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.