The Ultimate Pneumatic Polisher for Fabricators The Alpha AIR-680 is the Ultimate Pneumatic Polisher for Fabricators. As an upgraded version of the proven successful AIR-658, it is better than ever. This high-performance, pneumatic polishing tool has a central water-fed distribution system that produces the highest quality finishes. It has a maximum speed of 4,000 RPM, consumes 15 CFM, and requires 85 PSI. With a 5/8-11 spindle, the AIR-680 is lightweight and ergonomically designed. It is now equipped with 15ft flexible air and water supply hoses and an oil port for easy maintenance. These new hoses are made of Flexzilla and are all-weather flexible down to -40F. Additionally, Alpha offers a splash guard and C-shaped handle as optional accessories. This workhorse tool is designed for a long life and is a must-have for any fabrication shop. New Oil Port for Easy Lubrication; New All-Weather Hoses with Flexibility down to -40F; Includes Industrial Wrench for Easy Tool Removal!