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Knightsbridge 25mm Bi-Metal Holesaw - Yellow

£299
The RRP is the manufacturer's recommended retail price of the item.
Limited Stock
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Description

The Knightsbridge 25mm bi-metal holesaw cuts a 25mm diameter hole through steel, stainless steel, die-cast metals, hardwood floors, plywood and plastics. The bi-metal construction combines a high-speed steel cutting edge welded to a carbon steel body, giving better wear resistance and longer life than standard carbon steel holesaws when cutting harder materials.

Designed for electrical installation work where a 25mm cut-out is required for cable glands, conduit entries, or accessory back boxes, the holesaw uses 4/6 TPI variable teeth that reduce vibration and improve cutting speed across different material densities. The 38mm cutting depth allows the saw to cut through typical plasterboard-on-stud walls, timber joists and sheet metal panels in a single pass without needing to drill from both sides.

The yellow powder-coated finish on the steel body resists corrosion and makes the saw easier to locate in a toolbox or on a workbench. The holesaw requires the separate HSARBORS arbor (sold separately) which carries the pilot drill bit and threads into the base of the saw body. The arbor's spring-loaded ejector plate pushes the cut plug out of the saw after each hole, reducing downtime between cuts.

Specification
Diameter 25 mm
Recessed Depth 38 mm
Cut-out Diameter 25 mm
Construction Steel
Finish Yellow
Warranty 0
Downloads

Product Specification Sheet

Frequently Asked

What arbor does this holesaw require?

The 25mm holesaw requires the Knightsbridge HSARBORS arbor, sold separately. The arbor carries the pilot drill bit and threads into the base of the holesaw body, and includes a spring-loaded ejector plate to push out the cut plug after each hole.

What materials can it cut?

The bi-metal construction allows the holesaw to cut steel, stainless steel, die-cast metals, hardwood floors, plywood and plastics. The high-speed steel cutting edge gives better wear resistance on harder materials than standard carbon steel holesaws.

What does 4/6 TPI variable teeth mean?

TPI (teeth per inch) varies between 4 and 6 around the cutting edge. This variable tooth pitch reduces vibration and improves cutting speed when working across different material densities, particularly when cutting through composite materials like plasterboard-on-stud walls.

Can it cut through a standard UK stud wall in one pass?

Yes. The 38mm cutting depth allows the holesaw to cut through typical 12.5mm plasterboard on both sides of a 50mm timber stud in a single pass, provided the drill can maintain enough torque and the arbor's pilot bit is long enough to guide the cut.

Shipping & Returns

Delivery UK delivery is £14.99, and delivery is free on all orders of £99 or more, in the UK and internationally.

Returns If you change your mind, you have 14 days from delivery to tell us, and a further 14 days to send the goods back. Return postage for a change-of-mind return is paid by you. Change-of-mind returns are subject to an inspection and handling deduction. See our full returns policy.

To arrange a return, call us on 020 8149 5199 or use our contact page.

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    Description

    The Knightsbridge 25mm bi-metal holesaw cuts a 25mm diameter hole through steel, stainless steel, die-cast metals, hardwood floors, plywood and plastics. The bi-metal construction combines a high-speed steel cutting edge welded to a carbon steel body, giving better wear resistance and longer life than standard carbon steel holesaws when cutting harder materials.

    Designed for electrical installation work where a 25mm cut-out is required for cable glands, conduit entries, or accessory back boxes, the holesaw uses 4/6 TPI variable teeth that reduce vibration and improve cutting speed across different material densities. The 38mm cutting depth allows the saw to cut through typical plasterboard-on-stud walls, timber joists and sheet metal panels in a single pass without needing to drill from both sides.

    The yellow powder-coated finish on the steel body resists corrosion and makes the saw easier to locate in a toolbox or on a workbench. The holesaw requires the separate HSARBORS arbor (sold separately) which carries the pilot drill bit and threads into the base of the saw body. The arbor's spring-loaded ejector plate pushes the cut plug out of the saw after each hole, reducing downtime between cuts.

    Specification
    Diameter 25 mm
    Recessed Depth 38 mm
    Cut-out Diameter 25 mm
    Construction Steel
    Finish Yellow
    Warranty 0
    Downloads

    Product Specification Sheet

    Frequently Asked

    What arbor does this holesaw require?

    The 25mm holesaw requires the Knightsbridge HSARBORS arbor, sold separately. The arbor carries the pilot drill bit and threads into the base of the holesaw body, and includes a spring-loaded ejector plate to push out the cut plug after each hole.

    What materials can it cut?

    The bi-metal construction allows the holesaw to cut steel, stainless steel, die-cast metals, hardwood floors, plywood and plastics. The high-speed steel cutting edge gives better wear resistance on harder materials than standard carbon steel holesaws.

    What does 4/6 TPI variable teeth mean?

    TPI (teeth per inch) varies between 4 and 6 around the cutting edge. This variable tooth pitch reduces vibration and improves cutting speed when working across different material densities, particularly when cutting through composite materials like plasterboard-on-stud walls.

    Can it cut through a standard UK stud wall in one pass?

    Yes. The 38mm cutting depth allows the holesaw to cut through typical 12.5mm plasterboard on both sides of a 50mm timber stud in a single pass, provided the drill can maintain enough torque and the arbor's pilot bit is long enough to guide the cut.

    Shipping & Returns

    Delivery UK delivery is £14.99, and delivery is free on all orders of £99 or more, in the UK and internationally.

    Returns If you change your mind, you have 14 days from delivery to tell us, and a further 14 days to send the goods back. Return postage for a change-of-mind return is paid by you. Change-of-mind returns are subject to an inspection and handling deduction. See our full returns policy.

    To arrange a return, call us on 020 8149 5199 or use our contact page.