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Solid carbide drill bits for hardened steel. Australian importer. Solid carbide straight flute drills not just tipped drills. Drill grade 12 high tensile bolt, broken tap, easy out, screw extractor, hard bearing housings. DiamohardTM brand carbide drill bits and carbide burr sets are tools made to tackle difficult workshop jobs. You can even drill tool steel & high speed steel. For drilling stainless steel or wearplate steels, Cobalt Drills are more appropriate.