The HILTI SFD 2 A Light Duty Impact Bit Driver is a powerful 12-volt tool designed for heavy-duty applications. With a chuck size of 1/4 inch, this impact driver is ideal for fastening and driving tasks. The tool does not come with a battery included, making it convenient for users who already have a compatible battery in their possession. The HILTI SFD 2 A model is known for its durability and reliability, making it a valuable addition to any workshop or tool collection.