kit 8inch Concrete Drill Bit Set Cross-Type Double Thread Carbide Material Suitable for Concrete, Brick, Cement Walls, Stone, Hammer Drill Bits for Concrete
SIZE INTRODUCTION:The total length is 8 inches, the actual effective length is 6 inches. The set includes 5/32''x8'', 7/32''x8'', 1/4''x8'', 5/16''x8'', 3/8''x8'', 7/16''x8'', 1/2''x8''.
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 market
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