General description 5X N3 Glow Plug Spark for 70117 1/10 1/8 RC Truck Nitro Engine Parts is designed for 4c engines using 5%-40% nitro fuels. This glow plug enhances idle performance and transition for improved engine operation. Technical specifications Item Model: N3 Size: 1.8*1.8*0.9 cm Material: Metal Color: Silver Package contents 5 * Glow Plug 5 * Gasket Other information Note: Light shooting and different displays may cause the color of the item to differ slightly from the real thing. The measurement allowed error is +/- 1-3 cm.