Helical-cut steel, heat treated gears for increased durability and long gear life Metal gear housing for increased durability Rubber grip and two-finger trigger for increased comfort 360 degree side handle for greater control Keyless chuck for quick bit change Specifications: AMPS: 7.8 Max. watts out: 600W Keyless chuck: Yes Spindle lock: Yes No load speed: 0-850 RPM Gear reduction: Double Capacity in Wood: Spade bit 1-1/2", Self-feed 2-1/8", Hole saw 3-1/2", Auger bit 1-1/8" Capacity in Steel: Twist bit 1/2", Hole saw 1-1/2" Tool weight: 4.2 lbs. Shipping weight: 5.5 lbs.