Ingersoll Rand Air Grinder, 1/2 in. - 13 Thread, 4 in. Guard, 12000 rpm - 77H120H84
Amazon.com: Ingersoll Rand 3101G Air Die Grinder Edge Series – 1/4", Heavy Duty, Right Angle, Ergonomic Grip, Ball Bearing Construction, Lightweight Tool, Black : Everything Else
Airgas - IRT301B - Ingersoll Rand Air Die Grinder
913656-2 Ingersoll Rand Rear Exhaust Angle Air Die Grinder, 1/4" Collet, 20,000 rpm Free Speed, 0.33 HP | Imperial Supplies