General description The 9 Piece Bosch HSS Bi-metal Hole Saw Set for Plumbers is designed for efficient and precise cutting. Made from bi-metal HSS with an 8% cobalt alloy, this set ensures long-lasting performance. The Vario tooth strip configuration allows for smooth cuts through various materials, making it an essential tool for plumbing tasks. Technical specifications Material: Bi-metal HSS with 8% cobalt alloy Includes 6 x HSS Bi-metal Hole saws: 19mm, 22mm, 29mm, 38mm, 44mm, 57mm 1 x Arbour with Pilot Drill for 14-30mm 1 x Arbour with Pilot Drill for 32-152mm 1 x Allen Key Compatibility and accessories Fits all standard adaptors on the market Supplied in a handy carry case