Milescraft 1/4 in. Shelf Pin Bit is a self-centering bit designed to bore a consistent depth for fitting shelf pins every time without the need for adjustments. This 1/4" Shelf Pin Bit features self-centering boring bits in a 5mm diameter, allowing you to drill ly centered holes for shelf pins with ease. It includes a spring-loaded HSS brad point drill bit, making it i for use with the Milescraft CabinetMate. Before using the bit, be sure to fully tighten the set screw, and when loosening it, avoid loosening too much to prevent the bit from coming apart due to spring pressure. This bit precision and convenience for your woodworking projects. Model Number: