Xscorpion HSS-14 14-Piece M42 Material Hole Saw Set .75-Inch 14 Piece Material Hole Saw Set Improved backing plate prevents warping at the holes Unique tooth design and set pattern enhances cutting performance and increases durability 2 Arbors: 3/8" Hex, fits 14-30mm and 7/16" Hex, fits 32-216mm Includes 3/4", 7/8", 1", 1-1/8", 1-3/8", 1-1/2", 1-3/4", 2", 2-1/8", 2-1/4", 2-1/2"