Three Elgin Factory Balance Staff for 21/0s Grade 533, 535 - #5388

Three Elgin Factory Balance Staffs for 21/0s grade 533, 535 movements and perhaps others as well, factory catalog No. 5388, Elgin refill no. 533-264, new in envelope. See images for further details.  From a supply house in Utah so I'm going to presume they are Bestfit. I specialize in hard to find watch parts so I usually have whatever you might need and all watch parts are unconditionally guaranteed. Images do an adequate job of representing the item.