ESTES 1606 B6-4 Model Rocket Engines 3 Pack (Ships USPS Ground) Sprint Car RPM Axle Carriers have been

RPM Axle Carriers have been completely redesigned for added durability and crash-survivability

Tough 6 mm stub axles

Other aftermarket ESC plates require double-sided tape to retain your valuable Castle Mamba X 8S ESC

and get ready to blast off

6") x 430mm (16

ESTES 1606 B6-4 Model Rocket Engines 3 Pack (Ships USPS Ground) Sprint Car RPM Axle Carriers have beenESTES 1606 B6 4 Model Rocket Engines 3 Pack Ships USPS Ground Only The Estes B6 4 engine is single stage engine designed for model rocket flight. This engine is a standard engine designed for flights in rockets weighing less than 4 ounces, including the engine. Each package includes 3 engines, 4 starters and 4 plugs. SPECIFICATIONS: Length: 2. 8 in. (7 cm) Diameter: 18 mm Estimated Weight: . 63 oz. (17. 9 g) Total Impulse: 5. 00 N sec Time Delay: 4