M42 Bi-Metal Hole Saw Drill Bit (16–200mm) – For Wood, Plasterboard & Downlight Openings

Cut smooth, clean circles with this M42 Bi-Metal Hole Saw Drill Bit – ideal for everything from installing downlights to cutting perfect holes in plasterboard, soft wood, plastic, and thin metal sheets.

With high-speed steel teeth and a rugged bi-metal construction, it’s built to power through stubborn materials without burning out or dulling too fast. Choose the exact diameter you need (from 16mm to 200mm) for your next home or workshop project.

Key Features:

• Precision Cutting: Engineered for clean, burr-free holes in plasterboard, wood, plastic, and thin metals.

• M42 Bi-Metal Blade: Combines HSS teeth with a flexible steel body for durability and heat resistance.

• Wide Diameter Range: Available from 16mm up to 200mm – perfect for downlight holes, vents, pipes and more.

• Standard Arbor Fitment: Fits most drill chucks with compatible arbor adaptors (not included).

• Multi-Use Tool: Great for electricians, carpenters, DIYers, and anyone doing installation work.

Specifications:

• Material: M42 Bi-Metal (HSS + flexible alloy body)

• Cutting Diameter Range: 16mm – 200mm (choose size from options)

• Cutting Depth: Approx. 25–30mm

• Shank Type: Arbor required (not included)

• Tooth Pitch: Variable pitch for smoother cuts and less vibration

• Compatible Materials: Wood, MDF, plastic, plasterboard, soft metal (e.g. aluminium)

• Ideal Uses: Downlight holes, pipe cutouts, ventilation openings, socket recesses

Ideal For:

• Electricians installing ceiling spotlights or downlights

• DIYers cutting clean holes in plasterboard

• Tradespeople working with MDF, plastic, or soft metals

• Workshop tinkerers who want perfect circles without splinters or mess

Don’t Let Cheap Blades Burn Out

This M42 hole saw holds an edge longer and cuts cooler – meaning less stalling, more drilling, and fewer ruined panels.