This is the Servo Pack for the Multiplex Gemini, MPUA2142. FEATURES: Correct size servos and extensions for aileron, rudder and elevator control on the Multiplex Gemini Park Flyer Trainer INCLUDES: Four Hitec HS-45HB Feather Servos, HRCM0987 Two 6" (152mm) Servo Extensions, HRCM7344 REQUIRES: Installing in model, connecting linkages and connecting servos to receiver SPECS: HS-45HB Servo; Size: 23.6 x 9.8 x 22.4mm (.92 x .38 x .88") Output Torque: 1.0Kg-cm (13.88oz-in) at 4.8Volt Operating Speed: 0.14 sec/ 60°at 4.8Volt Weight: 8g (0.28oz) jxs 08/09/10 ir/jxs