The Tandem-X launch set includes two rocket kits, the Amazon and the Crossfire ISX, along with a launch pad and controller. The Amazon is an easy-to-assemble rocket standing nearly three feet tall. The Crossfire ISX is a Skill Level 1 kit that soars to 1150 feet.

Recommended Engines:

• Amazon: B4-2, B4-4, B6-2, B6-4, C5-3, C6-3, C6-5
• Crossfire ISX: A8-3, B4-4, B6-4, C6-5, C6-7

• Manufacturer: Estes