The BlueSpot 3 Piece Countersink Bit Set is manufactured from heat treated carbon steel for increased durability. Features 1/4" hex shank. Suitable for all hand and power drills. Manufactured from heat treated carbon steel for increased durability. Features 1/4" Hex Shank. Suitable for all hand and power drills. For manufacturers lifetime guarantee you just need to register online within 30 days of purchase.
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