For automotive and light maintenance applications. Durable and long lasting, with an all ball bearing construction and precision-machined steel gears. Self-locking throttle lever prevents accidental starting of motor. Precision-machined steel gears. Built-in lubricating wick increases angle gear life. Durable ball-bearing construction improves balance, reduces vibration, and ensures a longer life. 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. Rear exhaust directs air aways from the operator. Front exhaust helps keep work surface clean