Made of quality alloy steel, this tool is durable, practical, and designed for a long service life. Easy switching: switch between drill and drive bit in seconds, eliminating the need to change bits in the middle of a project. Two different sizes of drill bits: choose two drill bit sizes to drill pilot holes, flip the arm, then screw in screws, nuts, or fasteners. Quantity included: 8 cross drills, 8 slot drills, and 2 countersink drills to meet basic project needs. Practical benefits: reduces tool swapping, increases efficiency, and provides versatility for drilling and driving tasks. Use scenarios: Woodworking or furniture assembly: drill pilot holes and then drive screws in a single workflow. Home repairs in tight spaces or overhead: quickly switch to drive bit for fasteners without repositioning tools. Cabinet installation or hardware finishing: use the countersink drills for flush, clean screw heads.