A general purpose tool designed for porting, light weld grinding, and breaking sharp edges. Ball bearing construction for longer tool life. Built-in lubricating wick increases angle gear life. Durable ball-bearing construction improves balance, reduces vibration, and ensures a longer life. Front exhaust helps keep work surface clean. Integral safety-lock throttle lever prevents accidental start-up. Lightweight, durable and ergonomic composite housing protects tool from cold air and offers greater operator comfort. Piped-away exhaust optional. Positive grip collet chuck. Rear exhaust directs air away from the operator. Self-locking throttle lever.