Sygma carries a line of high speed steel attachments for holesaws. Extension Bars increase how far the holesaw can reach. At the same time, professionals can make a center hole and guide the holesaw with the Pilot Drills. Arbor Adapter makes it possible to reduce the arbor hole diameter so that a larger holesaw can fit onto an arbor designed for a holesaw size that is smaller than what the user is trying to attach onto the power tool.
Most importantly; the pilot drill, extension bar, and arbor adapter contain heat treated high speed steel construction.