Estes Rockets 1/2A3-4T Engines

Launch your next model rocket on Estes Rockets 1/2A3-4T Engines Each package includes 4 engines, 4 starters and 4 starter plugs 1.8 inches x .50 inches and weighs .23 oz Total impulse: 1.25 N-sec Max thrust: 8.30 Newtons Can only be shipped via USPS Parcel Select Ground. No international shipping is allowed. The Estes 1/2A3-4T engine is single stage engine designed for model rocket flight. Launch your lightweight rocket into the air with this pack of 4 engines, 4 starters and 4 starter plugs. Max thrust is 8.30 Newtons and total impulse is 1.25 N-sec. Remember, these engines only ship USPS Parcel Select Ground.  Products Containing Crystalline Silica | CA Prop 65 Boyce Aerospace Hobbies recommends hobbyists under the age of 13 be supervised by an adult at all times.