1. Versatile and easy to use. Very effective tool. High efficiency. 2. TAIWAN MADE MOTOR-more powerful and product last longer. 3. Durable, lightweight composite housing design helps reduce vibration. 4. Die Grinder - Ideal for light duty metal fabrication, grinding, porting and polishing applications. 5. Air Screwdriver - Ideal for wood screws, wall boards, setting aluminum windows and doors, and assembly line work. For carpenters use, setting slabs of automobiles and other kinds of setting use. 6. Great value for both professional and hobby users.