The Q550 Frame is a well thought out 550mm hexacopter frame built from quality materials. The main frame is glass fiber while the arms are constructed from ultra-durable polyamide nylon. The Q550 frame features integrated PCB connections for direct soldering of your ESCs. This eliminates the need for a power distribution board. The Q550 frame also features colored arms (2 white, 2 yellow and 2 red) which are great for orientation. It helps to keep you flying the right direction without the need for different colored props. Assembly is a breeze with pre-threaded brass sleeves for all of the frame bolts, so no lock-nuts are required.