IRWIN 10501955 drill bit Twist drill bit 1 pc(s)PATENTED EXTRA SHORT CARBIDE TIP Head takes 80% of the workload, ensuring higher durability and speed Clears drilling dust directly into the flute, reducing the risk of clogging Self centering for easier control More aggressive concave cutting angles for faster drilling Drills 20% faster while maintaining the same high durability Brazing The brazing process used to attach the tip to the drill bit is conducted at 1000 Celsius meaning high heat