This is the Hitec Flight Pack for the Multiplex Cularis (MPUA2118). FEATURES: 8-channel autoshift receiver is compatible with all modern FM transmitters Standard size servos with universal connectors, extra servo horns and mounting hardware Servo extensions INCLUDES: Supreme IIS Receiver Four HS-55 Servos (HRCM0982) Two HS-81 Servos (HRCM3402) Two 6" Servo Extensions (HRCM7344) Four 17" Servo Extensions Two 26" Servo Extensions SPECS: Supreme IIS Receiver- Size: 2" x 1.26" x 0.79" (51 x 32 x 20mm) Weight: 1oz (28.5g) HS-55 Servo- Weight: 8.0g (.28oz) Speed: 0.17 sec/60° @ 4.8V Torque: 15 oz/in (1.1 kg/cm) @ 4.8V Size: .90 x .45 x .94" (23 x 12 x 24mm) HS-81 Servo-_ Weight: 16.6g (.58oz) Speed: 0.11 sec/60° @ 4.8V Torque: 36 oz/in (2.6 kg/cm) @ 4.8V Size: 1.2 x .47 x 1.2" (30 x 12 x 30mm) REQUIRES: Hitec 72MHz Dual Conversion Crystal, HRCL01** tlw 8/29/07 ir/jxs