These two tools are required for external threading on an old lathe and are well suited to Chinese tools. I don't shake very often, but when I had them, they worked pretty well.
AccusizeTools Indexable Carbide Turning 2387 π§ 2004: Precision Machining Solution for Turning Operations
3 Review
OSCARBIDE Indexable Heavy Duty Grooving Threading Cutting Tools
3 Review
π§ S12M SDUCR07 SDJCR1212H07 Carbide Turning tool with DCMT21 51 insert
3 Review
AccusizeTools Indexable Carbide Turning Tool 2387 2003
3 Review