Versatile stepped design enables drilling with multiple bit sizes without swapping bits mid task. This feature increases efficiency by reducing stops to change bits. Durable and reliable construction that is hard and resistant to breaking under normal use, providing long service life. Easy to install and use, with no need to change the drill while working. Quick setup helps you complete projects faster. Key benefits - Function: supports a range of common drill bit sizes through a stepped structure. - Performance: designed for durability to withstand regular drilling tasks. - Convenience: eliminates the need to pause and switch drills during work. 2-3 practical use scenarios - Woodworking and cabinetry: drill progressive holes for dowels or hardware in a single piece without changing bits. - Furniture making and repairs: create holes of varying sizes along a board quickly and consistently. - DIY metal or plastic projects: fabricate multiple hole sizes in sheet material without interrupting the workflow.