Tornado M Series 20" Metal Floor Machine, Dual Speed, 175/320 RPM (98484)The Tornado M Series 20" Metal Floor Machine is built to handle the toughest cleaning environments with ease. Featuring a rugged rolled steel base, non marking soft bumper guards, and a triple planetary gear system, this dual speed machine offers durability and performance for even the most demanding floor care tasks. Whether you need 175 RPM for deep scrubbing or 320 RPM for high shine polishing, the M Series delivers the versatility you need.