For the Mini Lathe we recommend the 2MT B12 Arbor (Item No. 8119 or 9540). If you are using the larger B16 chuck, 2MT B16 Arbor (Item No. 8139A).
For variable speed machines such as WM 180, WM 250 and WM 280 as well as the belt drive WM 240B we recommend the 2MT B16 Arbor (Item No. 8139A). If you are using the larger B18 chuck, you should select 2MT B18 (8140A).
For the gear head machines such as the GH1232, GH1236, GH1322, GH1330 and GH1440 we recommend the 3MT B16 Arbor (Item No. 8148A). If you are using the B18 chuck, 3MT B18 (8141A).