Estes Rockets Fin Alignment Guide 2231 Polycarbonate Northrop won a competition for

Northrop won a competition for an improved International Fighter Aircraft (IFA) to replace the F-5A with better air-to-air performance against aircraft like the Soviet MiG 21

With a top speed of Mach 1

no special wiring or control boxes needed

The set can be used for interesting diorama scenes or as a stand-alone model set

Detailed superstructure with four funnels

Estes Rockets Fin Alignment Guide 2231 Polycarbonate Northrop won a competition forFAST & ACCURATE fin alignment Great for three or four finned rockets Fits body tubes ranging from BT 20 to BT 80 A precision molded accessory that makes it easy to glue three or four fins to various sized body tubes ranging from BT 20 to BT 80 diameters. Unique and adjustable vertical fin holders can accommodate either 3 32 in. or 1 8 in. balsa, bass or plywood fins. This is a must have tool for any serious model rocket builder. Never attach your fins