TURN-KEYED The new upgrade to the SR-20JII model provides increased flexibility, more tooling configurations, and high rigidity with high accuracy. Large tooling capacity for main operations 8-Station back-working unit with Y-axis and increased power. Slanted dovetail construction on tool post provides high rigidity Switchable G.B. and N.G.B. change-over starcnc.com/wp-content/uploads/2018/07/StarSR-20JII-SpecSheet-2020.pdf