[Advantage]With a fully ground spiral groove design, these drill bits minimize friction and heat, enabling a cooler and faster drilling action. [Enhanced Efficiency ] Our drill bits feature a pointed central serration, greatly improving chip evacuation, thereby increasing overall drilling efficiency and making the process smoother and quicker. [Titanium Coating]These twist drill bits are crafted from high-quality HSS material and coated with long-lasting titanium, ensuring that the cutting edges remain for a longer period to meet all your requirements. [Applications]Whether you are working with a thin board, wood, aluminum alloy, plastic, or engaged in groove processing, our twist drill bit set is the perfect tool for the job., Manufacturer: Akfldms