B6-4 Std Rocket Engine - EST1606

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)