This air polisher from Barranca Diamond has a built in water regulator, an auto stop safety lever, a rear exhaust and a 1 year warranty.
It is excellent for polishing stone and can be used with diamond polishing pads up to 5" and with diamond cupwheels up to 4" diameter..

*Variable speed up to 5000 RPM
*Lightweight at 4lbs
*Durable and dependable

This rear exhaust, pneumatic wet polishing tool is designed for continuous production applications and improved safety. Lightweight and compact, this tool provides the operator with increased comfort and reduced fatigue. Cast from aircraft aluminum, the BD-2131 is one of the most durable tools of its kind on the market for polishing stone. The water-tight sealed bearings provide long life and smooth rotational speeds in all operating conditions. The water and air controls are simple to use and conveniently located. Exhaust is vented at the rear of the tool and carried away from the operators’ hands by the hose protector. The BD-2131 comes with 25' water hose, 5' air hose, 3' air/water hose protector, D-handle, wrenches. (Backer pad not included)