This CNC kit included:

1 x Digital Stepper Drive 1.0-4.2A 20-50VDC for Nema 17, 23, 24 Stepper Motor
1 x Nema 23 Bipolar 1.8deg 1.9Nm (269oz.in) 3.0A 3.36V 57x57x76mm 4 Wires

Motor Specification

*Manufacturer Part Number: 23HS30-3004S
*Motor Type: Bipolar Stepper
*Step Angle: 1.8 deg
*Holding Torque: 1.9Nm(269oz.in)
*Rated Current/phase: 3A
*Voltage: 3.36V
*Phase Resistance: 1.12ohms
*Inductance: 4.8mH ± 20%(1KHz)
*Frame Size: 57 x 57mm
*Body Length: 76mm
*Shaft Diameter: Φ6.35mm
*Shaft Length: 21mm
*D-cut Length: 15mm
*Number of Leads: 4
*Lead Length: 500mm
*Weight: 1.2kg

Connection:

Black: A+, Green: A-, Red: B+, Blue: B-

Driver Specification

*Input voltage 20-50VDC
*Anti-Resonance provides optimal torque and nulls mid-range instability
*Motor auto-identification and parameter auto-configuration when power on, offer optimal responses with different motors
*Multi-Stepping allows a low resolution step input to produce a higher microstep output, thus offers smoother motor movement
*15 selectable microstep resolutions including 400, 800, 1600, 3200, 6400, 12800, 25600, 1000, 2000, 4000, 5000, 8000, 10000, 20000, 25000
*Soft-start with no "jump" when powered on
*8 selectable peak current including 1.00A, 1.46A, 1.91A, 2.37A, 2.84A, 3.31A, 3.76A, 4.20A
*Pulse input frequency up to 200 KHz, TTL compatible and optically isolated input
*Automatic idle-current reduction
*Suitable for 2-phase and 4-phase motors
*Support PUL/DIR mode
*Over-voltage and over-current protections