Hole Saw, Bosch Bi‑Metal, Single 22 mm, for drill, drywall/metal/plastic/softwood

Bosch Bi‑Metal hole saw, single 22 mm diameter, designed for use with standard drills and adapters. The bi‑metal construction combines high speed steel and cobalt alloy for enhanced durability and cutting performance. This hole saw creates clean circular openings in drywall, non‑ferrous metals, steel, plastic and softwood, making it suitable for installation work involving pipes, cables and fittings. Supplied as a single piece, it fits common hole saw arbors and supports a cutting depth of 44 mm when used with compatible hole saw units.

Advantages

The Bi‑Metal design improves resistance to wear and maintains cutting edge life compared with simple carbon steels. A vario tooth strip (tooth configuration) ensures smoother entry and reduced snagging across different materials, resulting in cleaner hole edges. Compatibility with standard adapters and arbors simplifies tool setup and replacement, while the 22 mm diameter provides a compact option for precise penetrations in confined spaces.

Suitable for

• Cutting holes for small pipes and conduits in drywall and softwood
• Creating openings for cable glands and electrical fittings in metal and plastic panels
• Plumbing installations requiring precise circular penetrations
• General maintenance and retrofit work where small, clean holes are needed

Key specifications

• Diameter: 22 mm
• Material: bi‑metal high speed steel with cobalt content (HSS, approx. 8% cobalt)
• Suitable materials: drywall (plasterboard), non‑ferrous metals, steel, plastic, softwood
• Cutting depth (when used with compatible hole saw units): 44 mm
• Compatibility: fits standard hole saw adapters and arbors

How to use

Secure the hole saw to a compatible arbor or adapter following the arbor manufacturer’s instructions. Mark the centre point of the hole and, where appropriate, drill a pilot hole to guide the saw. Operate the drill at a steady speed and apply moderate pressure to allow the bi‑metal teeth to cut without excessive force. Clear chips regularly to avoid clogging, and finish the cut by withdrawing the saw once the hole is complete. Wear appropriate personal protective equipment such as safety glasses and gloves during use.

Usage recommendations

For best results, use a drill with adjustable speed control and start at a lower speed when cutting metals or plastics, increasing speed as needed for drywall and softwood. When cutting metal, use cutting lubricant to extend tool life and reduce heat. Replace the hole saw if teeth become dull or if excessive vibration occurs during cutting.