Speed Slot Features A Staircase Design For Easy Plug RemovalEnhanced Tooth Geometry, A Thin Kerf Design And An Advanced Coating Contribute To The Efficiency Of The Cutting ProcessIncludes: 1 Each - 7/8", 1-1/8", 1-3/8", 1-3/4", 2" And 2-1/2" Holesaws, 1 - Snap-Back 2L Arbor, 1 - Snap-Back 5L Arbor, 1 - Pilot Drill And 1 - Arbor AdaptorHolesaws Included Are Most Commonly Used Sizes By Electrician'sComes With Carry Case