High Quality Hole Saw Kit Our hole saw blade is made of heat-treated carbon steel. High-speed steel teeth for fast and clean cuts. High precision, smooth cutting edge, especially impact resistance and wear resistance. Super sharp saw teeth were designed to cut faster, no material gets stuck, making the job faster and better. Safety and Durable They feature high strength and hardness, designed for increased durability and exceptional cutting performance. Our hole saw features a reinforced shoulder for added strength and longer life. 16PCS AccessoriesOur hole saw set includes 12 most common saw blade sizes: 3/4"(19mm), 7/8"(22mm), 1-1/8"(28mm), 1-1/4"(32mm), 1-1/2"(38mm), 1-3/4"(44mm), 2"(51mm), 2-1/2"(64mm), 3"(76mm), 3-1/2"(89mm), 4"(102mm), 5"(127mm), 2 mandrels with nut, 1 hex wrench, 1 installation plate. These tools are perfect for all your needs. Wide Application Suitable for softwood, plywood, oak, thin PVC board, plastic, drywall but NOT metal, hardwood (density boards, particle boards and computer tables). What You Get 12 x Hole Saw Blades, 2 x Mandrels, 1x Drill Bits, 1 x Hex Wrench, 1 x Storage Box.which is very convenient to store and easy to carry.Comes with a small and sturdy storage box, which is very convenient to store and easy to carry.