This vintage USA Columbia drill bit set includes 4 pieces with sizes of 5/16, 3/8, 7/16, and 1/2. These drill bits are in used condition. Please see the pictures as part of the description.

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Return policy: 30 Days. Please note the item must be returned in the condition it was received. New items must be in their original condition, packaging, and unused. We do not accept returns for: Products received more than 30 days ago, or products that have been used or removed from their original packaging.