Coolnut Self Centering Drill Bits Set for Hinges, Center Drill Bits Bit Set with Plastic Storage Case for Wood Woodworking Door Window Cabinet Hinge Total 10 PCS (Colorful)

FEATURE: Enhances drilling accuracy and speed with self-centering. Shell's dual-hole design facilitates faster sawdust ejection. MATERIAL: Constructed from high-speed steel; undergoes double heat treatment for enhanced hardness and wear resistance. NOTE: Opt for a reduced drilling speed (recommended between 2000R/min and 3000R/min) to prevent the drill bit from failing to self-center, breaking, or becoming lodged due to excessive speed. SIZE: Includes 5/64", 7/64", two 9/64", 11/64", 5mm, 13/64", 1/4", totaling 8 pieces of 1/4" hex shank self-centering hinge bits. APPLICATION: Perfect for woodworking tasks; ideal for installing hinges on doors, , cabinets, etc