The SpeedyBee F405 V4 3-6S 30x30 Flight Controller is designed for drone enthusiasts. It has a mounting size of 30.5 x 30.5mm with 4mm hole diameter, dimensions of 41.6(L) x 39.4(W) x 7.8(H)mm, and weighs 10.5g. Use it for an exciting drone flying experience, whether you're a beginner or an advanced user looking to upgrade your setup.