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.