Description
The Estes B4-4 is a mid-power 18 mm engine designed for rockets weighing under 3.5 ounces. With a 4-second delay and smooth performance, it’s a great fit for entry-level and seasoned rocketeers alike.
Each retail pack includes 3 engines, 4 starters, and 4 plugs.
Includes:
– 3 B4-4 Engines
– 4 Starters
– 4 Starter Plugs
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