Features: Elevates performances with our STM32 Quadcopter PID Tuning Debugging Frame. Crafted from highly grade Aluminum for superior durability and precise control. This tuning kit features advanced STM32 microcontroller, to fine tune your quadcopter's PID setting for stability and responsiveness. Ensures your quadcopters operate smoothly in a variety of environment. Essential for photography and videography quadcopter and equipment. Aachieving flawlessly flight dynamics and unparalleled control over your quadcopters. Specifications: Size??about 50x30cm/19.69x11.8in Component??Aluminum Package Includes: 1Set STM32 Four-Axised Model Aircraft Debugging Frame note: Due to the problem of lighting effect there might be tolerances in product, please understand. Please allow 0-2mm error due to manual measurement.