Description: - Designed for building 250 size quad copter by yourself (2D or 3D setup). It requires a good knowledge of RC systems, soldering skill and creation of power distribution system. - CNC Kit made by aluminum alloy, carbon fiber, delrin material and steel hardware. - Optimized for weight and durability. - Weight (CNC Kit 01): approx 59.5(g) = 2.1(oz). - Motor mount: up to 23mm Source Rakonheli: https://www.rakonheli.com/rkh-250-quad-x-cnc-kit-01-orange.html