Hole saws come in an array of sizes ranging from 1/8-6 inches and there are sets that include 5-8 different sized saws for those projects that require different sized holes.
Hole saws are also known as hole cutters because of their circular shape that is able to create precise holes in a workpiece. A hole saw is used as an attachment bit to a drill. These saws are made out of very durable materials such as steel, carbon-steel, carborundum, diamond grit, and more.