20mm End Mill Tool Holder Shank Indexable Boring bar with LNMU03 High Speed Feed Milling Inserts for Stainless Steel Hardened Steel. LNMU03 Miilling inserts: blade length=11mm, blade width=6mm, thikness=3.4mm ,inner hole=2.5mm, adapt to M2.5 6 screws;.
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