It is model 301B. For sale we have an Ingersoll Rand Angled Air grinder.

Country/Region of Manufacture: Unknown
UPC: 663023106106
Brand: Ingersoll Rand
Type: Angle Die Grinder
Grip: Right Angle
Collet Size: 1/4in.
Manufacturer Part Number: 301B
Air Inlet Size: 1/4in.
Set or Single Item: Single Item
Features: Variable Speed Trigger