15PC Hole Saws Set 11PC Hole Saws: 3/4" (19mm), 7/8" (22mm), 1" (25mm) 1-1/4" (32mm), 1-3/8" (35mm), 1-1/2" (38mm) 1-3/4" (44mm), 2" (51mm), 2-1/4" (57mm) 2-1/2" (64mm), 3" (76mm)2PC Arbors: 3/8" Hex, Fit 14 - 30mm; 7/16"Hex, Fit 32 - 210mm1PC Extension: 12" for 7/16" shank1PC Ejector Spring