4.5" Air Grinder for high performance finishing. MAX power: featuring a mighty 0.88 horsepower motor this grinder has a best-in-class power-to-weight ratio. MAX comfort: you will experience MAX Comfort in the grip through the re-designed handle and with an overall tool weight coming in at only 3.5 lbs. MAX safety: internal to the tool is a governor, a device used to prevent an over-speed condition and to maximize the speed of the tool while under load, protecting the operator during use. Built-in lubricating wick optimizes the life of the angle gear set by improving lubrication to the pinion and bevel gear set The Ingersoll Rand 3445MAX 4.5" air angle grinders offers professional technicians an outstanding combination of value and performance, delivering impressive power and comfort. A powerful .88hp motor provides plenty of power for rust and material removal.