General description Glow Plug for 4C engines designed for use with 5%-40% nitro fuels. This product improves idle and transition performance, making it an essential component for your RC truck's nitro engine. Technical specifications Item Model: N4 Size: 1.8 x 1.8 x 0.9 cm Material: Metal Color: Silver Package contents 3 x Glow Plug 3 x Gasket Other information Note: Light shooting and different displays may cause the color of the item in the picture to differ slightly from the actual product. The measurement allowed error is +/- 1-3 cm.