Quick change stainless steel hole cutter kit includes 7/8, 1-1/8, 1-3/8, 1-3/4 and 2 inch cutter heads, Arbor, Hex key comes with case. Used to cut stainless steel quickly and easily. Quick change arbor allows you to change cutter heads with a simple push and a turn. Use the same arbor for different size cutting heads. Flange stop prevents over-drilling. Ejector spring on all sizes above 3/4 inch makes removal of slug easier.