This is the Castle Creations Phoenix Edge HV 60 Amp 50V Brushless Electronic Speed Control.
One Castle Creations Phoenix Edge HV 60 Amp 50V Brushless ESC with an Instruction Sheet
Battery and motor connectors of your choice
Input Voltage: 3S-12S LiPo
Max Continuous Amps at Full Throttle: 60
Dimensions: 2.0 x 2.8 x 0.9" (50.8 x 71.9 x 23.2mm)
Weight: 3.9oz (110.2g) with wires
Weight: 2.1oz (59.2g) without wires