18V, M18 High Performance, 1/2", Drill Driver, 18V XC High Capacity Lithium-Ion Battery Delivers Longer Life & Run Time, Variable Speed Trigger, 4 Pole Frameless Motor Maximizes Tool Efficiency To Increase Run Time, At Only 9-1/4" Long & 5.3 LBS, It Is The Most Compact High Performance Drill/Driver Available, Which Minimizes User Fatigue & Maximizes Productivity By Fitting Into Tight Spaces, 1/2" Single Sleeve Ratcheting Metal Chuck With Carbide Jaws, On Board Battery Fuel Gauge Displays Remaining Run Time, Built In LED Light Illuminates Work Surface, For Replacement Battery Use TV #111-525 & Compatible With Battery TV #111-528.