Adapter Baldor 210/211/221/240 -Fits Baldor 210 & 211 Lathes with 35mm or 40mm bearing -Fits Baldor 221 & 240 Lathes with 35mm or 40mm bearing -Q508 adapter ring 40mm is included for lathes with 40mm bearings Note: Fits lathes with removable check ejector base illustrated in Figure 5 on page 3 of the Tech Bulletin below. If your lathe looks like Figure 4 on page 3 of the below Tech Bulletin this is not the correct adapter kit. You will need an end plate adapter. Search Q237 or Q239.