4 Pcs 8.5" Frame Arm for DJI Phantom F450 RC Quadcopter Flame Wheel Product Name : Quadcopter Frame Arm;for : for DJI Phantom F450 RC Quadcopter Thread Dia : 2mm/0.08";Total Size : 21.5 x 4 x 5.3cm/8.5" x 1.6" x 2.1"(L*W*H) Material : Plastic;Main Color : Red, Black Net Weight : 213g Package Content : 4 Pcs x Quadcopter Frame Arm