– Collet chuck material: 40CR, surface rust treatment,durable. Accuracy: 0.008mm, 8000RPM. – Apply carburizing and quenching process, high surface hardness, strong fatigue resistance and high wear resistance. – Maintaining the toughness of low carbon steel after quenching in the core, so that the tool holder can withstand certain impact and load. – It is a precision holder for professionals and hobbyists demanding ease of operation and high quality work results. – Application: Fit for milling machines and CNC machining center. Specification: – Material: Steel – Color: Silver
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