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Drill Bit Shanks: Round vs Hex (Quick Guide)

This page provides standardized, specification-oriented reference information.

Specifications

Specification	Value
Round Shank	Common on jobber bits; fits most keyed/keyless drill chucks.
1/4-inch Hex Shank	Designed for quick-change drivers/impact drivers; can reduce slip in some situations.
Notes	Impact drivers can be harsh on small bits; match tool and material.

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Last updated: February 23, 2026