Semi-enclosed unit contains dust and debris. Ideal for small workpieces. Use with MADC20 or other Dust Collector and compressed air. Foredoms Lighted Work Chamber is a great addition for dental and other lab technicians, jewelers, carvers, and fabricators working with small workpieces. It offers excellent visibility and keeps dust and debris contained when grinding, sanding, polishing and drilling workpieces that fit in your hand. The compressed air nozzle swivels and air flow can be adjusted from low to high and directed to funnel dust and debris away from the workpiece, through the back of the chamber and into Foredoms New Dust Collector or other dust collection system. Features: LED Light tilts to focus where needed. Compressed Air Nozzle has variable flow of air up to 90 PSI or 6 Bars and pivots to direct air on the workpiece,funneling dust and shavings away. Vacuum Port fits a 2-1/4 diameter hose for connection to a dust collector, shop vacuum or other device. A 2-pin style plug outlet for dust collectors with a remote on/off switch is located in the back. Power Switch on the front for the light can also remotely activate a separate dust collector. Acrylic Shields hinged and secured with screws contain dust and debris. 2-1/2x Magnifier is 5? in diameter and has 10x insert for closer work. It flips up, out of the way when not needed. Magnetic Work Rest (A-MWR03) Cylindrical rest has strong magnet at bottom with felt cover. Top has 1-1/2 dia x 3/16 thick rubber insert for protecting work pieces. Comes with 2 additional rubber inserts. 1-5/8 dia x 1-5/8 high overall dimensions. Padded Wrist Rests on both sides. Universal Voltage 115V or 230V (controls LED Light and Remote Switch) Dimensions: Outer: 11-1/2h x 11w x 10d Inner: 8h x 10-1/4w x 6-1/2 Weight: 11 lb Shipping Weight: 14-1/4 lb Two-Year Limited Warranty.