Estes B4-4 - 2 Packs of 3 for 6 Engines/Motors with Starters

• This bundle provides 6 of the Estes B4-4 model rocket engines - enough for a total of 6 launches!
• Includes the necessary starters and starter plugs (recovery wadding is not included)
• PLEASE NOTE: This item will ship by US Postal Service (USPS) ground transportation only
• You MUST HAVE a physical mailbox or Post Office box for delivery

This bundle provides 6 of the Estes B4-4 model rocket engines - enough for a
total of 6 launches! Includes the necessary starters and starter plugs
(recovery wadding is not included). TThe B4-4 is a standard size (18mm
Diameter) engine designed for flights in rockets weighing less than 3.5
ounces, including the engine. NOTE: Please verify that these engines are
compatible with your model rocket before purchasing. NOTE: THIS ITEM WILL BE
SHIPPED VIA USPS (United States Postal Service). You MUST HAVE a physical
mailbox or Post Office box for delivery. Engine Specifications: Length: 2.8
in. (7 cm) Diameter: 18 mm Estimated Weight: 0.68 oz. (19.3 g)