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This is a tool for turning internal threads and can be fitted with 22VNR series inserts. The tool shank is made of spring steel and heat-treated for good shock resistance and low deformation. Tool shank diameter 20mm, total length 195mm For machining angles of 29 degrees and Trapezoidal 5ACME with internal thread Made of German carbide, precision pressed and edge finely ground Can machine carbon steel, stainless steel, nickel alloy, high temperature alloy. Cast iron Items include SVNR0020R22 1PCS 22VNR5ACME 5PCS