The 1/2A6 A8 B4 B6 C6 E12 Starter Plug set, identified by the model number EST2251, is an essential accessory for your engine starting needs. This product includes a total of ten plugs, divided into two distinct varieties: five magenta and five green. Each plug is designed to optimize performance and reliability, ensuring a smooth start every time. Ideal for hobbyists and model enthusiasts, this set will enhance the functionality of your engine system.