Estes B6-4 Engines – Standard Model Rocket Engine 3-Pack Ender 3 V3 Plus All in one solution With

All in one solution With one drying dock you can add as many PolyDryer Boxes as you need so your next project is always ready to go

50 × 32 × 18 mm

Model: FSR402 Short Leg

Classrooms

Using modular construction components

Estes B6-4 Engines – Standard Model Rocket Engine 3-Pack Ender 3 V3 Plus All in one solution WithEstes B6 4 Engines Balanced Power for Mid Size Rockets The Estes B6 4 engine is a versatile option for standard model rockets, offering a balance of thrust and delay for smooth, controlled flights. Designed for rockets up to 4. 0 oz, it provides reliable performance with a 4 second delay for proper recovery system deployment. Key Features Standard 18 mm engine size compatible with many Estes rockets 4 second delay for controlled parachute deployment