SPECIFICATIONS:
Length:                            1010mm
Height:                            310mm
Width:                             160mm
Main blade size:                   425mm - 520mm
Tail blade size:                   72mm - 86mm
Motor pinion:                      12t included;13t optional
Helical CNC Main gear:             106t
Tail pinion:                       13T
Autorotation gear:                 60T
Main to tail gear ratio:           4.615
RTF weight:                        2400g-2700g
Main shaft diameter:               10mm
Feathering shaft diameter:         8mm
Tail boom diamater:                20mm
Max battery size:                  220mm*48mm*55mm

Includes:
(1) XLPower 520Kit

(1) XLPower 4020-1100KV Brushless Motor
(1) Set of RT 510mm Rotor Blades
(1) Set of XLPower 80mm Carbon Tail Rotor Blades
(1) Foam Blade Holder

Needed to Complete: 
Transmitter (7-channel or more, helicopter system)
Receiver (7-channel or more)
(1) 6S Li-Po 3000 ~ 5200mAh
(1) Digital Pitch Gauge
(3) Mini Size Cyclic Servos
(1) Full Size Tail Servo or Mini size Tail servo
(1) 6s ESC (80A Minimum Recommended)
Misc. Building Equipment