-Powerful, 12.0 Amp, all ball-bearing construction for long life and performance for the most demanding applications -Electronic module maintains specified speed under load delivering better finish results -Conveniently located variable speed dial lets user set maximum speed from zero to 600/3500 rpm for different materials and applications -Variable speed trigger allows user to control speed from 0 to dialed maximum setting -Heat-treated, precision-cut steel gears for smooth operation -Wool Ingestion Shields eliminates wool ingestion increasing tool life and reducing service costs -Non Mar Rubber Gear Case Cover reduces surface imperfections and improves gripping suface. Max Watts Out : 1250W No Load Speed : 0-600 / 0-3,500rpm Spindle Thread : 5/8"-11 Spindle Lock : Yes Tool Length : 18.5" Tool Weight : 6.7lbs