Lander Electric Retract Landing Gear System Is a New Design With Simple Structure , Compact Shape And Individual Control Capability.   *** This Is The Free Shipping Item And Will Ship To Customers By Airmail Only ! *** Features : -       With Metal Gears Motor Driven Inside. -      Without Any Strip Or Slope Problem. -   Advance Micro Control With Integrated Circuits Protection Design Can Automatically Stop And Recover Jamming And Over-Current Drain Problem. -      Already With Metal Mounting Plates & Suspension Metal Struts Installed. -      Suitable For All Jet & Plane , Up To 3.5Kgs Flying Weight. -       With 3 Divided Y Connection Wire & Extra Plastic Mounting Plates Include.  Description:  -       Size: 66mm (L) X 22.5MM (H) X 17.5mm (W) -       Weight : 180g ( Include Suspension Struts & Wheels ) -       Front Wheel Dia : 35mm -       Rear Wheel Dia : 52mm -      Working Voltage: 4.8 V - 6V -       Working Current: Around 0.3A