DYS ESC USB Linker ESC Programmer Looking for a programmer tool to update SimonK and BLHeli ESCs firmware then this is for you. Just plug in your ESC signal cable and update your settings. Features: • The mini USB Linker for the ESC programmer to update SimonK and BLHeli firmware Specs: Weight: 8.0g Size: 54x22x9mm Included: 1x USB Linker