Multifunctional drill bit for woodworking projects This countersink drill bit combines drilling, countersinking, and counterboring in one step, saving time and reducing the need for multiple tools. Quick change shank: 1/4 inch hex shank is compatible with most power drills and quick change chucks for easy, fast bit changes. Adjustable stop collar: allows you to set the screw head flush or slightly below the surface for a clean, professional finish. Key benefits Allinone operation reduces tool changes and speeds up work. Consistent screw head depth with adjustable stop collar for a uniform look. Broad compatibility with common power drills and quick change chucks. Specifications and features Function: drilling, countersinking, and counterboring in one pass Shank size: 1/4 inch hex Compatibility: power drills and quick change chucks Application: suitable for woodworking projects Stop collar: adjustable for flush or belowsurface screw heads Use scenarios Cabinetry and furniture assembly: create flush screw heads for hinges and hardware without switching bits. Drawer and panel installation: drill, countersink, and counterbore in a single operation for clean, professional joints. Hardwood mounting tasks: ensure precise screw depth with an adjustable stop collar for consistent results across multiple holes.