THIS HAS BEEN DISCONTINUED AND REPLACED WITH THE NF1. If you purchase this, you will be contacted about the substitution 
https://ballewsaw.com/dynabrade-nf1a-7-offset-nitrofile-abrasive-belt.html
Autobrade Red 7 Degree Offset Auto File II Abrasive Belt Tool

.5 hp, 20,000 RPM, Gearless, Front Exhaust, 11287 Contact Arm