Large diameter holes: Hole saws are ideal for making large holes that would be difficult to achieve with standard drill bits. A hole cutter comprises a cylindrical steel system with quite a few steel enamel on the perimeters. It bears a resemblance to the drill bit made of hole saws. https://wholesaleholesaws27059.tinyblogging.com/the-basic-principles-of-hole-saw-supplier-79161764