Can be Adjusted for Various Sizes of Balls. 2 Pcs x 3 Sided Indexable TNMG16 Tips Design For Internal & External Turning. The item "Lathe Machine Attachment- Turns Round Concave and Convex Ball-baring base" is in sale since Thursday, October 29, 2020.This item is in the category "Business & Industrial\CNC, Metalworking & Manufacturing\Metalworking Equipment\Metalworking Lathes". The seller is "machinetoolsindia" and is located in DELHI, DELHI. This item can be shipped worldwide.