Engineered for safety and performance, the 4.5 In./ 5 In. 1,250 watt WPB12-125 Quick angle grinder features a mechanical disc brake system that stops the tool in under 1 second when using thin cutting wheels. The powerful LongLife 10.5 Amp, AC/DC, 11,000 rpm motor includes advanced designs to optimize air flow for cooler operation and extend longevity in harsh environments. This compact angle grinder features a smaller, ergonomically designed body with integrated non-locking paddle switch for increased safety and more comfort, the quickest wheel change system available, and a tool-free quick-positioning guard that allows for fast change-over from grinding to cutting. The S-Automatic safety slip clutch helps to prevent kick back if a disc or wheel should jam.