Angle Sander by Sunmake 

Model: SA-4111

Recommended Air Pressure: 90PSI

Average Air Consumption: 5.3 CFM

Air Inlet: 1/4" NPT

Hose Size: 3/8" I.D.

Spindle Size: 5/8"-11

Capacity: 4"

This tool can also be used as a grinder.