Feature:1. The bimetal band saw blade is preferred, and the cutter head is made of M42 high-speed steel, which has been quenched at high temperature.2. The positioning drill bit of the hole opener is accurate and stable, using highquality highspeed steel materials, and has a long service life.3. Great workmanship, unique opening design, accurate positioning, can perfectly meet your punching needs.4. Equipped with a quickrelease spring, easier to be taken out after cutting.5. Wide range of applications, can be used to open holes in various wood panels, acrylic, aluminum gussets, iron sheets and other materials.Specification:Item Type: Bi-Metal Hole Saw Cutter SetMaterial: M42 high speed steelUse Equipment: Hand drill, bench drill and other flat drilling equipmentApplicable Scope: Can be used to open holes in various wood panels, acrylic, aluminum gussets, iron sheets, etc.Size (Dia): Approx. 80mm / 3.1in85mm / 3.3in90mm / 3.5in95mm / 3.7in100mm / 3.9in105mm / 4.1in110mm / 4.3in115mm / 4.5in.Package List:2 x Hole Saw Cutter 2 x Drill Bit