... 220V/110V 50/60Hz 4, Wood Package Dental Lab Bench For Double Person Use 1, Certification CE Approved & ... plate, arm rests, retrievable air nozzle, dust extraction system, storage drawers, etc.4, Technical Data Power Supply: 220V/110V ... Dust Extraction System×2 6) Tools Drawer×4 7) Storage Drawer×0 8) Pan×6 9) Acrylic Resin / ... (Optional) 11) Gas System×2 (Optional) 12) Technician Stool×1 (Optional)