Ingersoll Rand 3445MAX 4-1/2-Inch Air Angle Grinder 0.88-horsepower air motor delivers 12,000 RPM for impressive performance and greater material removal Internal governor maximizes speed under load, thus increasing productivity Enhanced grip design and lightweight construction increases comfort for extended usage Built-in lubricating wick optimizes the life of the angle gear set by improving lubrication to the pinion and bevel gear set Features a 6.4-meters-per-second-squared vibration level