uxcell 28mm Diameter Iron Cutting HSS Hole Saw Cutter Tool Silver Tone Product Name : Hole Saw;Use for : Iron;Material : HSS Twist Bit Diameter : 4mm / 0.16";Shank Size : 7x 20mm / 0.3" x 0.79"(D*H) Drill Flute Length : 15mm / 0.6";Hole Saw Depth : 8mm / 0.3" Cutting Diameter : 28mm / 1.1";Total Length : 71mm / 2.79" Total Net Weight : 63g;Package Content : 1 x Hole Saw