Hollow Core Bits

An annular hole cutter, also known as an annular cutter or core drill bit, is a specialized cutting tool used to create annular holes or annular slots in metal or other hard materials. The cutter consists of a hollow cylindrical body with teeth or cutting edges around the outer edge. When the cutter is rotated, the teeth cut into the material, creating a round hole with a clean edge and removing a core or annulus of material.

Annular cutters are typically used in applications where a high-quality hole is required, such as in metal fabrication, construction, and maintenance. They can create holes of various sizes and depths, and are capable of cutting through thicker materials than traditional twist drills. Annular cutters are often used in magnetic base drills or other specialized drilling machines, and are available in a range of sizes and materials, including high-speed steel, cobalt, and carbide. They are a popular alternative to twist drills, as they offer faster cutting, better hole quality, and longer tool life.

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