High Quality Rotary Attachment for Laser Engraver Spherical Carving Ball Surface Engraving Laser Machine Rotary Attachment For 4040 CO2 Laser Engraver Engraving Machine. Available: Cup, Bottle, Cylinder drum, Tube, Bowl etc. Two-phase four-wire stepping motor. Size:15.75*7.87*7.8740*20*20 cm) Product weight:9LB