The bit is made from 40Cr steel for robustness, while the tip is made from a tungsten-cobalt alloy to provide hardness and wear resistance. This combination ensures the bit can withstand demanding drilling applications in a variety of materials.
The spiral: The design of the spiral is optimized for efficient chip removal, which is critical for maintaining drilling speed and preventing overheating.
The smooth chip flow also reduces the risk of the drill bit jamming during use.