usmile S500 PCB Quadcopter Frame Kit with Landing Gear Skid for FPV Quadcopter FPV Drone able to Mount Gopro Gimbal F450 Upgrade Similar to F550 S500 is a entry-level and practical multi-rotor air frame kit for F450 upgrade quadcopter, which are mainly made of durable PCB board and hard plastic materials Compatible with Gopro Hero 3 2 Axis brushless gimbal or 808 gimbal for FPV Integrated PCB Wiring makes it easy to install, solder your XT60 or T connectors directly to the bottom plate Carbon rods impregnated into the arms, Sturdy construction and easy to assemble. Specially designed angled arms,increase flight stability while minimizing power loss, Cost-effective choice for entry-level aerial video shooting