... 2.stepper motor 3.square rail 4.high precision JK-6090 Wood CNC Machine with 4 axis: Features and performance:1. ... variable speed,water-cooledSpindle speed0-24,000rpmTool diameter1-12.7mmColletCollet ER20 12mm, 12.7mm, 6mm, and 3.175mmControl systemDSP0501,128MCommandHPGL ... .G code,u00,mmg,plt with rotary device Guarantee & after ...