GK-V3 13inch FPV Drone Frame KIT Carbon Fiber Model:GK-13inch-V3 Carbon Fiber wheelbase:550mm size:630*630*42mm weight:594g top thickness:2.5mm Base plate thickness:2.5mm arm thickness:7mm Camera mounting hole spacing: 19 mm Mapping mounting hole spacing 20*20mm & 30.5*30.5mm Flight Control Mounting Pitch: 30.5*30.5mm Inner space height: 35mm Motor mounting hole pitch: 25*25mm & 30*30mm