This HAKRC F7220 3 - 6S AIO 20x20 Flight Controller is a must - have for RC hobbyists. Whether you're a beginner looking to get into the world of RC flying or an experienced pilot seeking an upgrade, this product is for you. It has a size of 40 x 30mm with 20mmx20mm mounting holes, a net weight of 10g, and a packaging weight of 44g. It comes with built - in current sensor, and supports various receivers like ELRS/TBS Crossfire/Frsky/Futaba/Flysky/DSMX. With its great features and specifications, it's ready to take your RC adventures to the next level.