Stainless steel nemesis second drill 25mm steel plate Strict quality inspection, layer by layer check, a number of authoritative certifications, big brands are more assured to use Sharp and durable, 500 holes in a row High hardness and high cobalt twist drill M35 Accurate positioning, fast opening, smooth hole wall Double-back edge angle: 135° drilling, faster and neater Enlarge the chip chute to refuse to burn the drill The U-shaped discharge groove effectively prevents chip retention and high-speed operation, smooth chip evacuation, and high efficiency Thick stainless steel drilling Thick copper plate drilling Stainless steel round pipe drilling Easily penetrate materials of various materials: steel plate/copper plate/aluminum alloy/wood plate Stainless steel, titanium alloy, cast iron, aluminum alloy, woodworking culture, copper and iron Universal round shank design, electric drill bench drill can be used for fastening, not easy to slip