Concrete Hole Saw, Masonry Hole Saw Kit (30mm 40mm 65mm 80mm 100mm) with Max Shank & Plus Concrete Brick Diamond Carbide Hole Saw Set for Concrete Brick Cement Stone Wall Drilling concrete hole

Technology: Made of tungsten steel and anti-corrosion technology, with high hardness and rust resistance.It provides cutting strength for high-precision and smooth cutting, ensuring stable and fast drilling·Three Blade Design: Unique design process of inner, outer, and center edges to ensure sharp teeth and fast drilling speed. The openings between the blades are neat and there are chip removal slots, which can quickly remove dust during the drilling process·Dry & Wet: In a dual-purpose design. Without water or lubricating oil as a coolant, they can still withstand the enormous heat generated by the high-speed rotation of the hole saw. You can use them as coolant to extend the service life of the hole saw·Application: Suitable for cement walls, hollow bricks, concrete walls, red bricks, and stones. Install air conditioning pipes, range hood pipes, water heaters, smoke pipes, and other work (Tip: If drilling depth is compromised, clean up the residue)·Wide Compatibility: With two types of connecting rods, Plus and Max, both with lengths of 11-13/16 ", suitable for most tools on the market such as electric hammer drills, impact drills, and electric pickaxes