Check the listing for details. 2pcs Self Centering Drill Bit Set 7/64" Hex Shank 1/4" for Hinges, Silver. Condition: New. Listed at 15.61 USD. The self centering drill bit for wood is mainly used for creating precise holes and starting points for constant drilling or tapping operations. With a centering point or guide, the self-centering drill bit can automatically find the center compared to normal drill bit, ensuring the drill starts exactly where intended.The Self-centering design minimizes the risk of slipping, ensures precisely holes locating, which are especially useful for repetitive drilling tasks, saving time and improving accuracy, thus enhancing overall efficiency and the quality of the work. Constructed from carbon steel, the self-centering drill bit has high hardness ensuring durability and longevity, also resists wear and deformation under high torque.