{"product_id":"5890-25-0-90","title":"Robert Charles Single Flute Countersink 90° - M35-HSS-E 5% Cobalt - Metric - 25.0mm Head Dia","description":"\u003cdiv\u003e\n\u003cp\u003e\nThe Robert Charles Single Flute Countersink 90° – M35 HSS-E 5% Cobalt – Metric is a precision countersink tool designed for accurate countersinking, chamfering, and deburring of metric holes. With a 90° countersink angle and a 25.0 mm head diameter, it helps you create clean, centered edges in metalworking projects for reliable fits and smooth finishes.\n\u003c\/p\u003e\n\u003cp\u003e\nCrafted from premium M35 HSS-E with 5% cobalt, it delivers superior heat resistance and hardness, letting you machine tougher materials such as stainless steel and alloy steels with less wear. It’s also well-suited for non-ferrous metals, offering extended tool life and consistent performance across many jobs.\n\u003c\/p\u003e \u003cul\u003e\n\u003cli\u003e\n\u003cb\u003e5% cobalt-enhanced M35 HSS-E for longer life\u003c\/b\u003e: The cobalt alloy improves heat resistance and hardness, so the countersink stays sharper longer and reduces downtime when working hard materials like stainless and alloy steels.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003ePrecise 90° single-flute design\u003c\/b\u003e: Delivers clean chamfers and deburring with minimal chatter, providing a consistent countersink depth for metric holes.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eMetric-focused versatility\u003c\/b\u003e: Optimized for metric hole prep—countersinking, chamfering, and deburring—across stainless, alloy, and non-ferrous metals for reliable, repeatable results.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\nWhen you include this countersink in your toolkit, you gain faster, more consistent hole preparation, smoother edges, and extended tool life, reducing downtime and improving workflow across production runs.\n\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Robert Charles","offers":[{"title":"Default Title","offer_id":43418552270926,"sku":"5890-25.0-90","price":72.68,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0560\/3747\/4382\/files\/ZERO_FLUTE_DEBURRING_TOOLS_22eaf07d-4ddd-45a3-92b5-7dd811a97e99.png?v=1770028980","url":"https:\/\/www.protool-ltd.co.uk\/products\/5890-25-0-90","provider":"Protool Precision Tools","version":"1.0","type":"link"}