The modular 4-in-1 drill and driver set provides versatility and ease-of-use for contractor and DIY projects. Drill, countersink or counterbore, then release the locking collar, flip the modular insert and drive screws. Precision made for drilling accuracy and high-torque driving applications. Get jobs done easier, faster and with professional results. Titanium-coated drill bits are long lasting and complete this set.