DEWALT 110 Piece Shank Screwdriver Bit Set Farmhouse Kitchen Sinks Makita rapid optimum charger communicates Makita rapid optimum charger communicates with the battery's built in chip throughout the charging process to optimize battery life by actively controlling current The M18 & M12 Multi Voltage Charger accepts all M18 and M12 batteries heat treat maximizes torque Includes the most commonly used screwdriver accessories Magnetic drive guide reduces wobble DEWALT 110 Piece Screwdriving and Drill Bit Combination Set plus 4 Storage Cases Tough case container bit retention system keeps bits secure 110 Piece set for most drilling and driving needs Full hex design increases bit tip strength