The Bosch GCO220 is a metal cut off grinder with a 2200 Watt motor. It cuts steel with ease and has a cutting disc bore of 1 inch and a cutting disc diameter of 355 mm. The no-load speed of this portable metal cut off grinder is 3800 rpm. It has a better gearing system, which increases the product's lifespan. The design and metal base footplate provide stability and comfort while working for extended periods of time. Overall, the Bosch GCO220 - 355 mm Metal Cut off Grinder is one of the best meal grinder machines for professional use on the market.