... Router for stone : 1.rack and pion,gear 2.special struction for stone 3.wholly cast iron 4.linear guide ... JK-S20 Special CNC Router for stoneMachine features: 1. Particular style, competent ... sourceAC 220/50HzDriver typestepper motorSpindle4.5KW variable speed, water-cooled Spindle speed0 - 24,000rpmBlade diameter1 - 6mmControl systemDSPCommandHPGL,G code, u00, ...