grinding machine Description: 1:the whole machine is 98kgs with extra weightiron, which can be used for crystal surface renovation and floor cleaning 2:support is designed with metal to make it strong and durable 3:perfect steel gear box, 3planetary structure 4:interlock protection switch is used to prevent it from opening unconsciously 5:50 feet yellow cord can make you easily move in all directions 6:crystal surface treatment, renovation and floor cleaning Parameter No.BNT-122Model No.PX-170CommodityHeavy duty polisherVoltage220v/50hzHorse power2.0hpRotor speed175rpmWork width17''Work efficiency650-840sq.m/h