Reedy Blackbox 510R Competition ESCASC27004 This will be drop shipped from our vendor! Reedy Blackbox 510R Competition ESC Extensive race testing by Reedy's engineering and racing team has resulted in a high performance, high quality, and reliable ESC suitable for all levels of competition. Thanks to excellent throttle and brake feel, a wide range of precision adjustability, and durable high quality hardware, the Blackbox 510R is suitable for a wide range of racing applications.