Features: Achieve precise, selves centering holes effortlessly with this woodworking doweling jigs set featuring 1/4 inch and 5mm spring loaded drill bits for perfect alignment in cabinetry and furniture projects. The plastic 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. Streamlines cabinet door installations by marking hinge positions or creating flush mounted joints during furniture assembly in workshops and home garages. This multi functional drilling guide tool supports both imperials and metric measurements, ensuring compatibility with various hardware specifications – verify unit requirements before purchase. Specifications: Component: Plastic Size: 348mm/13.7''x139mm/5.47'' Drill specifications: 1/4" and 5mm Package Includes: 1Piece Shelf Pin Drilling jigs 1Piece 5mm Drill Bit 1Piece 1/4" Drill Bit 2Pcs Pin note: Please allow 1mm errors due to manual measurement. Due to the differences between different monitors, the picture may not reflect the actual color of the item.