Air saw-file - Lightweight durable saw and lock-off throttle are designed to prevent accidental start up. So as the adjustable blade guide and hand exhaust. At 5,000 strokes per minute, you're cutting or rasping with ease and low vibration. This tool has equipped itself within short time for multipurpose, expedient and simple use in body repairs, cutting sheet metal, thermoplastics, reinforced fiberglass, aluminum, wood, etc. Many technical advantages and simple handling make it superior to all other compass-body-saws in practice and economy. This product is designed for installing sunroofs in cars; unusual corrugations of roof and radius can be sawn easier. When fitted with a file, it is applicable to refinish door locks, oblong holes, etc. It is ideal for the following industries --- electronic, electric machinery, plastic, automobile industry and mechanical industry.