1/2 in. Cordless 20-V Hammer Drill. Quick Adjust Truck Allows For Easy Accessory Changes. Screwdriver Function With 15 Torque Setting. Two Mechanical Speed Allow A Great Range OF Drilling And Fastening Applications. Led Light Increase Visibility In Dark And Tight Areas. Variation Speed Switch For Greater Control And Precision And Delicate Materials. Brushless Motor Mush Efficient Than Carbon Brush Motors.