Features: 1. New configuration of Q1 has original import motor which under warranty for life around the world.Crafted,durable and attractive. 2. Science appearance design 3. Collapsible handgrip,integrated central control panel design,conviend operation,safe and reliable and in accordance with human ergonomics. 4. High-power(7.5HP)frequency conversion motor to meet requirments for the long and frequent grinding of industrial floor, 5. Automatic pressure adjust control system meet different needs of construction technology. 6. It can equiped with vacuum equipment to dry and wet working 7. Multifunctional abrasive plates can install all kinds of grinding accessories to reduce cost as much as possible. Certification: CE & SGS Operating width: 660mm Grinding disc: 330mm*4 Rotating speed: 435-1900rpm Horse power: 7.5HP Voltage: 380-440V Weight: 270kg Packing weight: 40kg Grinding plate: 12pcs Water tank: 45L.