-Out Tool, Voltage 18 V, Max. Speed 28,000 RPM, Collet Size 1/8 in, 1/4 in, Adjustable Depth Guide Yes, Brushless Motor Yes, Cordless Tool Kit Contents (1) Bare Tool, Cutting Depth 1 in, Accessory Free Tool Change Yes, Built-In Light Yes, Features 4-Pole Motor, LED Light, Redlink Intelligence Provides Overload Protection, Tool-Free Depth Adjustment, Top Vent Blows Debris Away from User, Handle Type Barrel Grip, Minimum Speed 28,000 RPM, Power Source Cordless, Number of Batteries Included 0