Correct option is A
The point is the cone-shaped cutting end of a drill bit that comes in direct contact with the material during drilling. It helps in starting the hole, guiding the drill, and cutting material efficiently.
· The point consists of the chisel edge, cutting lips, and the drill bit’s tip angle.
· A standard drill bit has a point angle of 118°, while a sharper point (e.g., 135°) is used for harder materials to reduce wandering.
· A split-point drill bit has a modified point for better self-centering and reduced thrust force.
· Carbide and high-speed steel (HSS) drill bits have precision-ground points for better durability.
· Regrinding the drill point maintains cutting efficiency and prolongs tool life.
