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Spade Blades and Indexable Drill Inserts

A spade blade (AKA spade bit) is a removable drill insert that creates large holes. Indexable drill inserts (AKA carbide inserts) are removable drill bits that are often used in computer numerical control (CNC) applications due to their wear resistant carbide cutting capabilities. They also fit into an indexable drill, which accepts inserts that clamp into a tool body that is specifically designed to accept them. When the cutting edge of an insert gets dull, it is indexed (turned), to take advantage of a fresh cutting edge. When all cutting edges become worn, it is discarded and replaced. For more on drill inserts, see our solid drill bits such as jobber length drill bits and carbide tipped drill bits.

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