Consists of the following hole saw sizes: 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". Includes 2 arbors with pilots 49-56-7010, 49-56-9100, 2 additional pilots, 1 adapter and 1 spacer.