Used with power drill, magnetic drills, benchtop drills to quickly and accurately cut stainless steel, sheet metal, cast iron, mild steel, aluminum less than 5mm; NOTE: Prohibit the use of ceramic tile, concrete, walls, stone Material upgrade is sharper Made of high-quality hard alloy, high precision, complete specifications, and fast work efficiency. Upgraded chip removal design Circular spiral chip flute, chip hole design, smoother chip evacuation Three-blade combination tooth type The tooth profile of the blade is composed of the inner blade, the middle blade and the outer blade, which reduces the probability of tooth chipping, has low cutting resistance, smooth chip removal, and prolongs service life. Chisel edge grinding center drill When drilling, the center drill first penetrates the material to prolong the service life With outer blade, middle blade, inner blade, small incision resistance and no burrs during drilling. Opening neat, smooth, no broken edges, no tremor phenomenon, chip easily. Ideal for Electricians, Plumbers, DIYs, Metal Professionals. Warm Tips 1.Check the integrity of the hole drill before use. 2.The hole drill is loaded into the electric drill and clamped corresponding to the three planes of the shank. 3.When drilling the hole,keep the verticality of the hole drill and the workpiece. 4.Start drilling with a small force,and use a medium force after positioning. 5.When drilling,the rotational speed should not be too low to avoid chipping caused by the cutting edge being stuck. 6.When the positioning drill drills through the workpiece,the force is not too large to avoid strong impact between the drilling cutting edge and the workpiece. 7.After the hole drill penetrates the workpiece,keep the hole drill rotating and exit the workpiece. 8.When drilling continuously,the cutting edge should be cooled with cutting fluid. 9.Depending on the power and torque of the hand drill,the use effect will be different.It is recommended that the thickness of the drill hole should not exceed 3mm,and the thickness should exceed 3mm.
