This plumber's heavy-duty hole saw kit features a range of accessories and variable pitch bi-metal hole saws, suitable for cutting steel, brass, bronze, cast iron, aluminium, wood and plastics. Manufactured from high-quality steel with a M3 steel cutting edge for fast clean cutting action, with a maximum cutting depth of 35mm. Each hole saw has four side vents for the efficient removal of waste and features two connection threads for fixing to an arbor. Supplied inside a sturdy blow moulded storage case. 1 x Plumber's Hole Saw Kit (13 Piece), 1 x Hex key, 1 x Adaptor, 1 x Simple arbor, 2 x Pilot drills, 1 x Locking arbor, 7 x Hole saws Body material: Bi-metal, Tip material: M3 steel, Saw diameter: 19, 22, 29, 38, 44, 51 and 57mm, Cutting depth: 35mm