CNCTOPBAOS 4 Axis Offline Stand Alone CNC Motion Controller System DDCSV3.1,Servo/Stepper Motor Control Replace Mach3 PLC+100PPR MPG Handwheel with E-stop for CNC Router Engraving Machine - Amazon.com
4-Axis NEMA42 CNC Kit (2830 oz-in/KL2283)
4 Axis CNC Router Kit 3.0 Nm(425oz.in) Nema 23 Stepper Motor & Driver & Power Supply - 4-DM542Y-23HE45 STEPPERONLINE
CNC 4 Axis Stepper Motor Driver-TB6560 Online | Matha Electronics
4 axis CNC Breakout board for MACH3, 100Khz, USB Control of Stepper Motor Drivers - NKX Motor