The Walter Surface Technologies Ironman and Ironman PS Grinders are designed for strenuous, prolonged use and feature an ergonomic rat-tail design, balance, 1,750 watts of power, 6" wheel capacity, a QUICK-R instant release function and Walter stabilizer to reduce vibration. The Ironman PS offers the same durability and performance as the Ironman but with added safety features: a "deadman" switch and mechnical brake stop grinding wheels from turning within two seconds of relieving the trigger, and cutting wheels within 1.5 seconds to minimize workplace risks.