The Bluespot Multi Holesaw Set is suitable for wood, thin alloys and thin sheet metal. Supplied in a handy storage case. Contains:

12 x Carbon Holesaws: 19, 21, 25, 32, 38, 44, 51, 64, 76, 89, 102 and 127mm.
2 x Arbors.
1 x Pilot Drill.
1 x Hexagon Key.