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solid CBN inserts Solid cbn inserts are used for rough and finish machining of hard steel ,cast iron and hard surface workpiece. Alias: RNMN,SNMN,TNGN,CNMN,RCMN,RCMX Application:turning hard steel,cast iron e-mail: [email protected] whatsapp +8615617785923 Send InquiryContact Supplier Details Cubic boron nitride inserts (CBN Inserts) is a high-performance type of cutting tool material from a polycrystalline mass. CBN is a high hardness, high heat resistance crystal