Types of drill bits
■ TWIST BITS have a cone-shaped cutting point and are suitable for various materials.
■ MASONRY BITS have a hardened tungsten carbide point.
■ BRAD POINT BITS have a sharp centre point for accurate hole positioning in timber.
■ SPADE BITS are flat with cutting spurs on the edges for timber.
■ MULTI-CONSTRUCTION BITS are ideal for drilling one hole through a combination of materials.