The Bosch 18V StarlockPlus Oscillating Multi-Tool (Bare Tool) (GOP18V-28N) features the Starlock next-generation 3-D tool-accessory interface. This provides outstanding accessory grip, making it the new professional standard in oscillating tool performance. With more contact surface area between the tool and accessory, the Starlock interface is a cupped 3-D tool-accessory connection that delivers greater torque transfer for an expanded work capacity. The no-touch blade-change system makes it easy to attach, remove or reposition blades. The EC Brushless 18V motor offers up to 30% more power and better efficiency than previous-generation 18V motors. A variable-speed dial allows you to set the optimal speed for the task at hand. At only 2.7 Lbs., this compact tool reaches tight spaces, provides comfortable ergonomic grip zones and has an LED light for illumination in dark work areas. The many Starlock and StarlockPlus accessories allow you to handle flush-cutting, plunge-cutting, sanding, grinding and many other tasks related to a wide array of materials.