Key Features: Small Girth Allows Comfortable Gripping Resulting in Superior Ergonomics, The Low Profile Gear Case Allows Access in Confined Areas, Abrasion Protected Motor for Increased Durability, Independent Box & Spring Brush Holder Design Increases Brush Life. Specifications: Brand: Dewalt, Spindle Thread: M10, Max Disc Diameter: 100 mm, Length: 270 mm, Uncertainty K1 Vibration: 1.5 m/s?, Model: DWE4001-B5, No Load Speed: 12000 rpm, Hand/Arm Vibration – Grinding: 9.4 m/s?, Height: 80 mm, Hand Arm Vibration Sanding: 7.5 m/s?, Weight: 1.72 kg, Power Input: 800 W.