Description
This is the B6-4 Standard Model Rocket Engines/Motors from Estes. Suitable for Ages 10 & Older with Adult Supervision for Those Under 12.
Features
Single stage engine
Standard engine designed for flights in rockets weighing less
than 4 ounces, including the engine
Engines tested and certified by the NAR
Easy to use and comes with clear instructions
Specs
Length: 2.75″ (7cm)
Diameter: .69″ (18mm)
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