Feature : Product name: BT NC tool holder/ER dynamic balance nc tool handle Overall clamping movement :0.008mm Roundness :0.8 u Ontology accuracy :0.003 mm Carburizing depth :>0.8 mm Material: high quality steel 20CrMnTi Standard speed: 25000~30000 RPM Hardness: > HRC48 °Packaging 1 : 1pcs BT NC tool holder/ER dynamic balance nc tool handle+Pull Stud 1pcsPackaging 2 : Pull Stud 1pcs

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