The 9 Piece Bosch HSS Bi-metal Hole saw Set for Electrician's. Made of bi-metal HSS containing 8% cobalt alloy for long-lasting cutting. The tooth configuration (Vario tooth strip) is ideal for gliding through material to provide smooth cuts. They fit all standard adaptors on the market. Supplied in a handy carry case. Contains:

6 x HSS Bi-metal Hole saws: 20, 25, 32, 38, 51, 64mm

1 x 11mm Hexagon Socket Adaptor (for hole saws 32-64mm Ø)

1 x 6.35mm Hexagon Socket Adaptor (for hole saws 20-25mm Ø)

1 x Allen Key