This is the high performance E-Flite 10-Amp Micro ESC.  This ESC is great for Speed 400 motors and below.  It comes pre-wired with connectors.

Features:

• For use with Speed 400 motors and below
• Proportional forward only (no brake)
• 10-amp continuous current
• Thermal overload protection
• Auto cut-off with BEC
• Prewired with connectors

Specifications:
Forward: Y
Brake: N
Continuous Maximum Current: 10
Input Voltage: 6 - 12
Motor Limit: Up to Speed 400 Series
Dimensions (WxLxH): .84 x 0.50 x 0.28 in
Weight: .24 oz
Overload Protection: Y
Auto Cutoff: Y