The Metabo HPT 18V MultiVolt? 4-1/2-Inch Cordless Angle Grinder (model G1812DFQ4) is a powerful and versatile tool designed for grinding, cutting, and polishing tasks. Here are some key features and specifications of the grinder: Key Features: Cordless Design: Operates on an 18V MultiVolt battery, providing the freedom to use it anywhere without being tethered to an outlet. High RPM: Can reach up to 8,000 RPM, allowing for efficient cutting and grinding performance. Paddle Switch: Equipped with a paddle switch for ease of use and improved control during operation. Safety Features: Includes five safety features to ensure safe operation. These may include features like a safety lock, restart protection, and others. Auto Mode: This feature may allow the tool to adjust its performance based on the load, optimizing battery life and efficiency. Compact Size: The 4-1/2-inch size makes it suitable for a variety of applications, especially in tight spaces. Specifications: Voltage: 18V Wheel Diameter: 4-1/2 inches No Battery Included: This model is sold as a tool only, so users will need to purchase a compatible battery separately. Weight: Lightweight design for ease of handling during extended TOOL BODY ONLY: Accepts any 18V battery or 18V/36V MultiVolt battery (sold separately) for added versatility ULTRA SLIM GRIP DIAMETER: At only 2.2" for ease of handling and comfort HIGH SPEED MOTOR: 750 W max power output and 8,000 RPM no-load speed AUTO-MODE OPTION: Automatically adjusts the RPM down when the tool is not under load, resulting in a decrease in noise and vibration, while also sparing the life of the battery for optimum performance REMOVABLE FINE MESH DUST FILTER: Additional protection for the motor against dust and debris and ensuring that the tool is operating effectively 3 POSITION ANTI-VIBRATION SIDE HANDLE: To allow for safe grinding even in narrow spaces PADDLE SWITCH: Cannot be activated unless lock-off lever is pushed down