18-12PCS Electric Hammer Drill Bits Wall Holes Opener Carbide Brick Wall Opening

6 x drill bits (35mm, 40mm, 50mm, 65mm, 80mm, 110mm). 6 x Core Drill Bits(35mm, 40mm, 50mm, 65mm, 80mm, 110mm). 4 guide bits. Drill Bit Tools. 35 mm-45 mm box type hole saws are used for drilling water and heating pipes.

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