Hole Saw Kit, 14-Pc.Diablo, 14 piece, hole saw kit , includes: 7 8", 1", 1 1 8", 1 3 8", 1 1 2", 1 3 4", 2", 2 1 8", 2 1 2" & 2 9 16" hole saws, snap lock plus mandrel, pilot bit & 2 adapter nuts 1 2" & 5 8", for quick & easy hole saw changes for maximum job performance, provide ultimate cutting length of 2 3 8" to bore deeper holes in a single pass, features variable tooth design for faster cuts, universal snap lock plus mandrel system fits all hole saws in the range,