Carbon Alloy Hole Saws are made from hardened tempered Carbon Alloy steel. Economically cut large holes in wood, drywall and light construction materials. Cuts to a depth of 3/4-Inch. Cut from both sides for deeper cuts. 14 Piece Set includes 3/4-Inch, 7/8-Inch, 1-Inch, 1-1/8-Inch, 1-1/4-Inch, 1-1/2-Inch, 1-3/4-Inch, 2-1/8-Inch, 2-1/2-Inch Carbon Alloy hole saws, two arbors, pilot drills, Allen wrench and 1-Inch spade bit.