Set of 19 bi-metal hole saws, from 3/4" to 3", with round drill bits, drill bit adapter, and extension for wood and metal

Fast and Superior Cutting: High-quality M42 steel materials are selected for the manufacture of this hole saw kit. It has been treated for precise vacuum electron jet welding, making it durable and solid for long-term use. 【EXCELLENT DESIGN】: Multiple slots are designed for cutting holes, high-speed steel teeth, and smooth cutting edges, offering different leverage points so you can easily complete the job. The flat-edged base facilitates arbor removal. The steel construction includes a thick back plate to withstand abuse 【WIDE APPLICATION】: This steel hole saw cutting tool kit can be widely used for threading aluminum, steel, cast iron, wood, plastic, plasterboard, and stainless steel. It is ideal for maintenance, construction, or craft work. 【Wide Selection of Scales】: Includes a set of 13 bi-metal hole saws of different sizes to meet all your needs: 3/4", 25/32", 7/8", 1", 1-1/8", 1-1/4", 1-3/8", 1-3/8", 1-1/2", 1-3/4" sq in., 2", 2-1/4", 2-1 1/16", 3"; 2 chucks, 1 extension, 2 mandrels, 2 Allen keys, 1 chuck adapter 【CONVENIENT STORAGE】: All the tool accessories in this solid steel hole saw cutting tool kit are stored separately in a compact aluminum alloy case, easy to store and transport, ideal for use at home or while traveling, convenient and practical to use