Features:
Item: 20A
continuous current: 20A
burst current (10A): 25A
battery(cell): 2~3
Dimension: 42 * 25 * 8
Wight(g): 19
BEC mode: linear
BEC output: 2A/5V
programmable: YES
Package size: 12 * 10 * 3cm / 4.8 * 4 * 1.2in
Package weight: 120g / 4.0 oz

Package list:
4 * MR.RC 20A Brushless ESC Speed Controller