Solid propellant rocket stage. . Used monolithic single motor with Nylon-S propellant.
Gross mass: 14,700 kg (32,400 lb). Unfuelled mass: 2,500 kg (5,500 lb). Specific impulse: 220 s. Specific impulse sea level: 220 s. Diameter: 1.80 m (5.90 ft). Span: 1.80 m (5.90 ft).