uxcell Drilling Tool 28MM Hole Saw Twist Drill Bit Hex Wrench Product Name : Hole Saw Set;Material : Hard Alloy Diameter of the Hole Saw : 28mm;Size of the Shaft : 9.5mm x 23mm(D*H) Total Size(installed) : 105mm x 28mm(L*D);Color : Silver Tone Weight : 148g Package Content : 1 x Hole Saw,1 x Twist Drill Bit,1 x Hex Wrenches