ZTW 20A Pro 4-in-1 ESC With Slilab F330 Chip 2-4s LipoSpecifacation:Brand Name:  ZTWItem Name:  ESC  Continuous Current:  20ABurst Current:  30AInput voltage:  2-4s LipoSize(L*W*H):  43*40*11mmWeight:  27gChip:  Silab F330Pakage Included:1 X ESC