Estes B6-4 engines EST 1606

The Estes B6-4 Rocket Engine 3-Pack is a medium engine pack that delivers high altitude flights. As a standard 18mm single-stage engine, this is designed for larger, heavier rockets.

Estes 1606 B6-4 Engine Bulk Pack package includes --

• 3 B6-4 Engines
• 4 starters 
• 4 starter plugs