Engineered for a broad range of grinding, cutting and deburring applications, the 4.5 In. 900 watt W9-115 Quick compact angle grinder features a smaller, ergonomically designed handle for more comfort and the quickest wheel change system available. The powerful LongLife 8.5 Amp, AC/DC, 10,500 rpm motor includes advanced designs to optimize air flow for cooler operation and extend longevity in harsh environments. The S-Automatic safety slip clutch helps to prevent kick back if a disc or wheel should jam.