Photo 1 of 2-Piece Creative Square Hole Cutter for Electrical Box. Concrete High-Strength SDS Plus Square Hole Punch Suitable for 86-Type Junction Boxes Hole Bit Applicable to Brick, Concrete, Cement and Stone.

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Photo 1 of 2-Piece Creative Square Hole Cutter for Electrical Box. Concrete High-Strength SDS Plus Square Hole Punch Suitable for 86-Type Junction Boxes Hole Bit Applicable to Brick, Concrete, Cement and Stone.Photo 2 of 2-Piece Creative Square Hole Cutter for Electrical Box. Concrete High-Strength SDS Plus Square Hole Punch Suitable for 86-Type Junction Boxes Hole Bit Applicable to Brick, Concrete, Cement and Stone.