<div class="detailmodule_html"><div class="detail-desc-decorate-richtext"> <p> </p> <p>Outside Diameter Size: 16mm/0.62in(5/8-Inch), 18.5mm/0.73in(3/4-Inch), 20mm/0.78in(4/5-Inch), 25mm/0.98in(1 Inch), 30mm/1.18in(1-3/16 Inch). There are 5 size of hole saw kit to meet your professional needs.</p> <p>High Quality Material: Made from strong HHS high-speed-steel for durability, high hardness, fast cutting, impact resistance, wear high temperature</p> <p>Sharp gears and anti-cutting with lower consumption make the product a long service life</p> <p>Can be used for thick steel plates, cast iron, stainless steel, non-standard angle iron and other metal open hole. Perfect for installing locks, knobs on doors and cabinets, or drilling large diameter holes through desks, etc</p> <p>Suitable for hand held electric drill, stand motor-driven drilling machine and mobile ribbon type magnetism drilling machine. Provide fast and precise cuts into stainless steel, sheet metal, cast iron, mild steel, aluminum, plastic,copper and brass</p> <p> </p> <p></p> <p> </p></div></div>