{"product_id":"knightsbridge-20mm-bi-metal-holesaw-yellow","title":"Knightsbridge 20mm Bi-Metal Holesaw - Yellow","description":"\u003ch5\u003eDescription\u003c\/h5\u003e\n\u003cp\u003eThe Knightsbridge 20mm bi-metal holesaw features variable 4\/6 teeth per inch (TPI) geometry designed to cut through steel, stainless steel, die-cast metals, hardwood flooring, plywood and plastics. The bi-metal construction combines a high-speed steel cutting edge with a spring steel body, providing edge retention when cutting harder materials and flexibility to resist cracking under load.\u003c\/p\u003e\n\u003cp\u003eDesigned for electricians and installers cutting 20mm knockouts for cable glands, conduit entries and junction box feeds, the holesaw delivers a 38mm maximum cutting depth in a single pass. This suits most standard wall thicknesses and panel materials encountered in residential and commercial electrical installation. The saw requires a separate arbor (Knightsbridge HSARBORS) to mount onto a drill chuck.\u003c\/p\u003e\n\u003cp\u003eThe 20mm diameter produces the exact cutout size needed for M20 cable glands and 20mm conduit entries, with minimal tolerance variance between cuts. The yellow epoxy coating on the body reduces corrosion from exposure to metal filings and cutting fluids, and provides quick visual identification when selecting from a set of multiple holesaw sizes on site.\u003c\/p\u003e\n\u003ch5\u003eSpecification\u003c\/h5\u003e\n\u003ctable class=\"spec_table\"\u003e\n\u003ctr\u003e\n\u003ctd\u003eDiameter\u003c\/td\u003e\n\u003ctd\u003e20 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRecessed Depth\u003c\/td\u003e\n\u003ctd\u003e38 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCut-out Diameter\u003c\/td\u003e\n\u003ctd\u003e20 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConstruction\u003c\/td\u003e\n\u003ctd\u003eSteel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFinish\u003c\/td\u003e\n\u003ctd\u003eYellow\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e0\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch5\u003eDownloads\u003c\/h5\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0729\/8993\/3835\/files\/products_1474268_datasheet.pdf\" target=\"_blank\"\u003eProduct Specification Sheet\u003c\/a\u003e\u003c\/p\u003e\n\u003ch5\u003eFrequently Asked\u003c\/h5\u003e\n\u003cp\u003e\u003cstrong\u003eWhat arbor does this holesaw need?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe 20mm holesaw requires a separate arbor to mount onto a drill chuck. Knightsbridge supplies a compatible arbor under part number HSARBORS, which includes a pilot drill bit and fits standard 13mm (1\/2 inch) drill chucks.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat materials can it cut?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe bi-metal construction and 4\/6 TPI variable tooth geometry allow it to cut steel, stainless steel, die-cast metals, hardwood floors, plywood and plastics. It is not designed for masonry, brick, concrete or ceramic tile.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow deep can it cut in one pass?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe 38mm cutting depth allows the holesaw to penetrate most standard wall panels, back boxes and enclosure materials in a single pass without needing to cut from both sides.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs the cutting edge replaceable?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eNo. Bi-metal holesaws are consumable tools. Once the teeth are worn or damaged, the entire holesaw body is replaced rather than re-sharpening or swapping cutting edges.\u003c\/p\u003e","brand":"Knightsbridge","offers":[{"title":"Default Title","offer_id":45293885653259,"sku":"HS20MM","price":2.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0729\/8993\/3835\/files\/1428940_ab9d1b7e-5612-4d4b-80b1-3ab454487780.jpg?v=1714665528","url":"https:\/\/niori.co.uk\/products\/knightsbridge-20mm-bi-metal-holesaw-yellow","provider":"Niori","version":"1.0","type":"link"}