The DoIt 941101DB 1-1/4" Carbon Steel Hole Saw with Mandrel is a high-quality power tool designed for precision cutting. This set includes a hole saw, bit, and mandrel, all made from durable carbon steel. The unit is sourced from China and comes with free shipping, making it a convenient and efficient choice for your workshop or home improvement projects. With a diameter of 1-1/4" and a model number of 113.226680 or 113.228880, this hole saw drill bit is a reliable and versatile tool for any job that requires accurate and clean holes.