Concrete Drill Bit lengthening 1pcs 3/4" X 12"-10" Cross-Type Double Thread Carbide Material Suitable for Concrete, Brick, Cement Walls, Stone, Extra Long Hammer Drill Bits for Concrete BinoBro 2mm) thick high energy magnet

2mm) thick high energy magnet

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Concrete Drill Bit lengthening 1pcs 3/4" X 12"-10" Cross-Type Double Thread Carbide Material Suitable for Concrete, Brick, Cement Walls, Stone, Extra Long Hammer Drill Bits for Concrete BinoBro 2mm) thick high energy magnetAbout this item SIZE INTRODUCTION: The total length is 12 inches, the actual effective length is 10 inches. Alloy Cutter Head: The harder cross cutter is easier and more efficient for drilling work. Material: High strength alloy steel is made by Wensilon, very hard. Ripple design: double line of drill bit design, drilling and punching is faster, stone powder is easier to peel off from the wall. Compatible with most brands of impact drills on the