Estes Rockets B4-2 Engines spo-default Choose from 2 scale options

Choose from 2 scale options

the Honest John weighs approximately 1lb 3oz

waterslide decals and a bright 24" parachute

Weighs approximately 1oz and measures 3

Three first stage fins (plus a bonus spare in case of a rough landing)

Estes Rockets B4-2 Engines spo-default Choose from 2 scale optionsLaunch your next model rocket on Estes Rockets B4 2 Engines Each package includes 3 engines, 4 starters and 4 starter plugs Total Impulse: 5. 00 N sec Max Thrust: 13. 2 Newtons Can only be shipped via USPS Parcel Select Ground. No international shipping is allowed. The Estes Rockets B4 2 Engines is for rockets weighing less than 4 ounces, including the engine. The package includes 3 engines, 4 starters and 4 starter plugs. Max thrust is 13. 2 Newtons.