HSS Hole Saw for Metal and Plastic — 15, 16 or 19 mm

This drill-driven cutter makes a circular opening by cutting around its perimeter. The center pilot bit establishes the position, while the toothed steel cup removes the ring of material around it. The visible spring assembly is part of the tool construction. It offers a different preparation method from a hand punch when a suitable workpiece needs a drilled takeoff opening.

Select the opening for your fitting

Choose one cutting diameter: 15 mm, 16 mm or 19 mm. These are separate purchase options, rather than a three-size set. Match the diameter to the connector or grommet installation requirement. The retained main photograph carries a different diameter marking and shows the tool family; the selected option determines the ordered size.

Prepare and make the opening

Check that the cutter shank fits the drill chuck and that the material and wall thickness suit the cutter before starting. Isolate any pipework and secure the workpiece so it cannot rotate. Mark the center, wear eye protection and use a drilling speed and feed appropriate to the material. Keep hands away from the rotating teeth.

Finish the connection and care for the tool

Stop the drill before clearing swarf, inspecting the opening or releasing the cut plug. Deburr the edge where necessary, remove all loose material and flush pipework before installing a fitting. Confirm the completed hole and seal fit on a test piece first. Dry the cutter after use and protect its teeth during storage; cutting performance depends on edge condition and correct operation.