The Estes 1607 B6-6 model rocket engine is an upper stage b rocket engine designed for use with Estes multistage model rockets. It can also be used as a single stage engine in lightweight rockets. This engine is a standard size engine (2.75" long x .69" diameter) for use in model rockets weighing less than 4 ounces, including the engine. Each package includes 3 engines, 3 igniters and 4 igniter plugs.
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