What's in the box:

Aibecy CNC Shield V3.0 Expansion Board R3 Board 4*A4988 Driver 4*4401 Stepper Motor Kit with Heatsink USB Cable for 3D Printer (Standard)

Features:
Latest CNC Shield Version 3.0.
GRBL 0.8c compatible. (Open source firmware that runs on a R3 Board that turns G-code commands into stepper signals)
4-Axis support. (X, Y, Z , A-Can duplicate X,Y,Z or do a full 4th axis with custom firmware using pins D12 and D13)
2 x End stops for each axis (6 in total); Spindle enable and direction; Coolant enable.
Uses removable Pololu A4988 compatible stepper drivers. (A4988, DRV8825 and others)
Jumpers to set the Micro-Stepping for the stepper drivers. (Some drivers like the DRV8825 can do up to 1/32 micro-stepping )
Stepper Motors can be connected with 4 pin molex connectors or soldered in place.
Runs on 12-36V DC. (At the moment only the Pololu DRV8825 drivers can handle up to 36V so please consider the operation voltage when powering the board.)

Specifications:
Package Size: 26.5 * 8.5 * 6.5cm / 10.4 * 3.3 * 2.6in
Package Weight: 1200g / 42.3oz

Packing List:
1 * CNC Shield V3.0
1 * R3 Board
4 * A4988 Driver
4 * Heat Sink
4 * 4401 Stepper Motor
4 * Motor Cable
1 * USB Cable