• Includes 24 rocket engines (12 B6-0 and 12 B6-6), 30 model rocket starters, 24 reusable starter plugs, and 75 squares of recovery wadding
• This two engine combo pack is to be used with two stage rockets. The B6-0 is a booster engine that has no delay or ejection charge. The B6-6 is the upper stage engine.
• Each engine measures 2.80" (7.1cm) long and has a 0.69" (18mm) diameter
• PLEASE NOTE: This item will ship by US Postal Service only
• You MUST HAVE a physical mailbox or Post Office box for delivery

This two engine combo pack is to be used with two stage rockets and comes with
all the rocket engine supplies you need to launch 12 rockets. Includes 24
rocket engines (12 B6-0 and 12 B6-6), 30 model rocket starters, 24 reusable
starter plugs, and 75 squares of recovery wadding. The B6-0 is a booster
engine that has no delay or ejection charge. The B6-6 is the upper stage
engine. Estes engine bulk packs are convenient and include everything your
students need to prepare their rockets for launching. Use the B6-0/B6-6
engines to launch the Mongoose, Taser Twin, Solar Flare, and other compatible
two stage model rockets. Engine Specifications: Length: 2.8 in. (7.1 cm)
Diameter: .69 in. (18 mm) Estimated Weight: .55 – .64 oz. (15.6 – 18.1 g)
PLEASE NOTE: This item will ship by US Postal Service only. You MUST HAVE a
physical mailbox or Post Office box for delivery.