Skill Level: E2X Includes 12 Rockets and Rocket Lab Lesson Guide. Rocket Specifications: Length:12.5" (31.75 cm) Diameter:.54" (13.8mm) Weight:.47 oz (13.22gm) Fins: 3 fin one piece plastic Recovery: Streamer Recommended Engines: 1/2A3-2T, 1/2A3-4T,(First Flight) A3-4T, A10-3T Estes-1793 Retail: $63.99 Our Price: Learn about Payment Options | Security | Privacy | Shipping | Our Company. Trademarks property of Centuri Corporation, Custom Rockets, and ToyBiz Inc.