The EzESC is a replacement for the ESC used in the Vortex 285 quadcopter.
Only 9.4mm wide, it fits nicely into the carbon fibre arm tubes used in the Vortex.
12A continuous, 16A peak, with 3s, or 4s packs.
Traditional PWM, or OneShot modes auto-detected.
Don't be fooled though, it can be used in any quad, is super small and comes with power and signal leads already soldered.