{"product_id":"5890-10-0-90","title":"Robert Charles Single Flute Countersink 90° - M35-HSS-E 5% Cobalt - Metric - 10.mm Head Dia","description":"\u003cdiv\u003e\n\u003cp\u003eThe Robert Charles Single Flute Countersink 90° (Metric) is a precision cutting tool designed for accurate countersinking, chamfering, and deburring of metric holes. It’s built for engineers, machinists, fabricators, and DIY enthusiasts who need clean edge finishes and dependable performance in a variety of materials. This countersink delivers consistent depth and smooth chamfers, making setup quick and predictable.\u003c\/p\u003e \u003cp\u003eCrafted from premium M35 HSS-E with 5% cobalt, this tool combines high hardness with excellent heat resistance to extend tool life even under demanding cutting. The cobalt-enhanced steel holds a sharp edge longer than standard high-speed steel, enabling reliable performance on stainless steel, alloy steels, and non-ferrous metals without frequent re-sharpening.\u003c\/p\u003e \u003cul\u003e\n\u003cli\u003e\n\u003cb\u003ePremium M35 HSS-E with 5% Cobalt\u003c\/b\u003e: Delivers superior hardness and heat tolerance for longer edge life and consistent performance on tough materials like stainless steel and alloy steels.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003e90° single-flute geometry\u003c\/b\u003e: Ensures fast, precise countersinking with a clean chamfer and minimal chatter for a smooth, repeatable finish.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003e10 mm head diameter for stable cuts\u003c\/b\u003e: Provides robust guidance and reduces deflection, yielding uniform chamfers across a range of hole sizes.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eThis countersink helps you complete hole prep efficiently, reduces deburring time, and delivers repeatable, professional results across metalworking tasks. With its durable cobalt-enhanced steel and precise geometry, you can rely on steady performance, fewer tool changes, and a dependable finish from project to project.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Robert Charles","offers":[{"title":"Default Title","offer_id":43418552041550,"sku":"5890-10.0-90","price":27.65,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0560\/3747\/4382\/files\/ZERO_FLUTE_DEBURRING_TOOLS_8b1896b3-8110-4fd8-8d5f-ca2cdc8e4a5f.png?v=1770028956","url":"https:\/\/www.protool-ltd.co.uk\/products\/5890-10-0-90","provider":"Protool Precision Tools","version":"1.0","type":"link"}