Lizusidtsy Usage: 1. Connect with the centrifugal fan. 2. Connect with the industrial vacuum cleaner. 3. Connect with the household vacuum cleaner. Item type: Industrial Extractor Dust Collector Power: 750w Air Volume: 170 m3/h Wind Pressure: 2000pa Wind Speed: 12-28 m/s Dust Particles: 20 mm Pipe Inner Diameter: 25mm Efficiency: 80% - 95% Colour: Material:plastic Package Contents: 1 x Dust Collector Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.