Skystars AM60 is a powerful ESC for 5-7" copters. Due to the thick copper layer, gold plating, and six-layer PCB, the ESC can handle high currents. The ESC features a aluminum heatsink which helps dissipate heat and contributes to its mechanical durability. A major advantage of the ESC is that it uses the AlkaMotors AM_32 firmware, which is considered by many to be the best current firmware for ESCs.