This is the ultimate ZERO backlash upgrade to your Chinese CNC. If your building a new unit do it right the first time. The mounts included in this package are one piece Billet, and the couplers included feature a center mounted torque disc. This automation package provides ZERO backlash, and extreme durability.

48V 7 3A Power Supply 3 NEMA 23 300oz in 3 5A Motors Mounts Couplers | eBay