- PREMIUM QUALITY: Our drill bits are crafted from high-speed steel (HSS) with a titanium coating, ensuring they remain sharper and last longer than standard uncoated or oxide-coated bits. The unique double U-shaped flute design efficiently clears chips, enhancing drilling performance. - WIDE APPLICATION: Featuring a 135° point angle, these self-centering drill bits eliminate the need for a pilot hole, providing precision and ease of use. Compatible with both corded and cordless drills as well as drill presses, they are perfect for drilling mild steel, aluminum, copper, soft alloy steel, wood, and plastic. - SIZE LIST: This comprehensive set includes 19 sizes: - 32PCS 3/64" - 30PCS 1/16" - 30PCS 5/64" - 30PCS 3/32" - 20PCS 1/8" - 20PCS 9/64" - 12PCS 5/32" - 12PCS 11/64" - 12PCS 3/16" - 8PCS 7/32" - 4PCS 15/64" - 6PCS 1/4" - 4PCS 9/32" - 2PCS 19/64" - 3PCS 5/16" - 2PCS 21/64" - 1PC 23/64" - 1PC 3/8" - 1PC 1/2" - EXTRA CENTER PUNCH: The set comes with a sturdy case to keep all bits organized, featuring molded sizes on the lid for easy identification. Included is a center punch that allows for precise marking and drilling, ensuring accuracy in all your projects. This drill bit set is ideal for professionals and DIY enthusiasts seeking reliable, high-performance tools that cater to a variety of materials and applications.