This Saw Drill Bit is Made of#45 steel, heat treatment, HRC48-50, offers high hardness, lengthened core, and high concentricity.
Great for Drilling Square Holes in Wood with a mortising machine or a mortising attachment.Fits all mortising machines and drill press attachments.Square hole drill is mainly used for woodworking aspects.
This Set of Great woodworker tools can reduce labor intensity of construction workers, speed up the construction speed, reduce construction costs.