Features • Complete Kit Convenience: The For R3 Kit is fully equipped with essential components, providing a practical solution for your 3D printing and CNC projects • Versatile Connectivity: Easily connect or solder the 4401 Stepper Motor using a 4-pin Molex connector, compatible with DC12-36V for flexible power options • Multi-Axis Support: Designed to support 4 axes, allowing for advanced custom firmware setups and the ability to create a complete 4th axis with pins D12 and D13 • and Reliable: Crafted from high-quality materials, ensuring long-lasting durability and stability for all your electronic projects • Comprehensive Package Contents: Includes 4 motors, motor wires, USB cable, A4988 drivers, CNC expansion board, heat sinks, and a detailed user manual for easy setup Features: 1、The for R3 kit is fully equipped, which makes the kit quite practical and convenient for daily use. 2、The stepper motor can be connected or soldered in place via a 4？pin for Molex connector, and can work at DC12？36V. 3、The product supports 4？axes, in which X？axes, Y？axes, Z？axes and A？axes can use pins D12 and D13 to copy X, Y, Z with custom firmware or make a complete 4th axes. 4、 material can make sure the durability and stability of the product. 5、The package includes 4 4401 motors, 4 motor wires, 1 USB cable, 4 A4988 driver, 1 for R3, 1 CNC expansion board, 2 pins, 4 heat sinks and 1 English user manual. Specification: Item Type: For R3 Kit Compatible with GRBL 0.8c 4-Axex Support Package List: 4 x 4401 Motor 4 x Motor Wire 1 x USB Cable 4 x A4988 Driver 1 x For R3 1 x CNC Expansion Board 2 x Pin 4 x Heat Sink 1 x English User Manual Note: Currently only the Pololu DRV8825 driver can withstand voltages up to 36V, so please consider the operating voltage when supplying power to the development board. Package List 4 x 4401 Motor 4 x Motor Wire 1 x USB Cable 4 x A4988 Driver 1 x For R3 1 x CNC Expansion Board 1 x Pin 4 x Heat Sink 1 x English User Manual