The construction houses integrated storage compartment for drill bits and alignment pins, while its spring loaded mechanism ensures consistent hole positioning across multiple workpieces Ideal for professional woodworkers, enthusiasts, and cabinet makers requiring dowel joint alignment in woodcraft projects and hardware installations This multi functional drilling guide tool supports both imperials and metric measurements, ensuring compatibility with various hardware specifications – verify unit requirements before purchase Achieve precise, selves centering holes with this woodworking doweling jigs set featuring 1 / 4 inch and 5mm spring loaded drill bits for perfect alignment in cabinetry and furniture projects Streamlines cabinet door installations by marking hinge positions or creating flush mounted joints during furniture assembly in workshops and home garages, Manufacturer: ERRORY