YoCoo&reg; 4-Axis F450 RC QuadCopter Multirotor Airframe FlameWheel Rack Kit RC Airplane Building Kit for KK MK MWC (Black + Red) DJI Flame wheel F450 basic frame kit New design PCB board version fit for standard 50mm controller board like MK,KK, FF,MWC Diagonal Wheelbase : 450mm/17.7in Color: Black + Red; Net Weight` : 282g Made by advanced engineering material ,super strong & smooth Kit