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Construction B vs C
B (Composite) uses a carbide-tipped configuration on a steel shank. It is not compatible with shrink-fit toolholders and is limited to shank diameters of 6 mm and below. C (Solid Carbide) is full one-piece carbide — SS308 grade — with no shank restriction and broad holder compatibility including shrink-fit. For most cost-down proposals, B construction offers the best price-to-performance ratio within its compatible use range.
• B construction: shank ≤ 6 mm, not shrink-fit compatible
• C construction: shrink-fit compatible, full-body rigidity
• Cost-down proposals will specify which construction suits your holder setup and tolerance requirements
